I have access to a set of records that focus on a specific branch of my father’s family tree – our Franco-Swiss ancestors. These are the Montécheroux BMD records, which cover a period of 50 years from 1740 to the very eve of the French Revolution in 1789/90. In addition there are other sets of these records, one that covers a period from 1791 to 1792, from 1794 to 1817, and from 1818 to the middle of the century.

The Records are handwritten with some records written in Latin and others in French. I am proficient enough with both languages to be able to extract the event, the dates, along with the principles with a few other minor details. The script in which the records are written is of the ancien regime of the mid-to-late XVIIIe siècle and very difficult, in places, to decipher.

I got the idea of possibly using an AI chatbot to transcribe and translate the records. At first I wasn’t sure that it could be done but I asked first of ChatGPT and it had no problem transcribing this somewhat difficult script and then translating it into English. But the ChatGPT decided at some point to throttle me and that is when I remembered that I was paying Google for a subscription to Gemini. and the little chatbot that could readily took the task at hand..

It took me a few days to collect all 188 images that make up the first 50 years. The workflow consisted of me supplying no more than 10 images at a time which usually represented two or three years worth of records in each pass I requested from Gemini.

After I finished this first phase, I then consulted with Gemini to determine how to proceed to get to the goal of having a narrative created that focused on my ancestors and their immediate families. It was determined that I needed to get the data into a table or two and also to get the data from three descendancy reports that I pulled from ancestry.com. What follows is the narrative that I created using Google’s Gemini.

I’ll admit that I am kind of blown away by the results

The First 25 Years

Here is the detailed, year-by-year narrative analysis of the Montécheroux BMD records from 1740 to 1764, cross-referenced against your combined descendancy register.

This analysis highlights each direct ancestor and collateral relative, specifying their kinship relationship to you and their exact capacity (primary subject, parent, godparent/sponsor, or civic witness) in each event.

1740

• The Foundation of the Catholic Register & Civic Presence:
• 
  
  • BMD-1740-M01 (29 Feb 1740) & BMD-1740-D01 (5 Mar 1740): Pierre-Ignace Jourot serves as an official parish witness in his capacity as the village schoolmaster (ludimagister). (Note: A Pierre-Ignace Jourot born 1732 is recorded in your descendancy register as your 5th great-granduncle [JOUR-007]; the schoolmaster serving here in 1740 and marrying later this year represents an adult contemporary of that branch).
  • BMD-1740-B01 (16 Jul 1740): Marie-Anne Lachat / Lachor [LACH-019] (your 6th great-grandaunt) is born and baptized. She is the daughter of Laurent Loichat [LACH-001] (your 7th great-grandfather) and Agathe Maire [LACH-002] (your 7th great-grandmother). Acting as the official parish witness to this family baptism is Jacques-Ignace Voisard / Voyssard [VOIS-003] (your 7th great-grandfather).
  • BMD-1740-M02 (18 Aug 1740): Pierre-Ignace Jourot (ludimagister) marries Claudine Bourquenez at Mont-Saint-Hippolyte.
  • BMD-1740-B02, B03, B04 (Sep–Oct 1740): Jacques-Ignace Voisard [VOIS-003] (your 7th great-grandfather) appears continuously across all remaining Catholic baptisms of the year as the primary parish civic witness. In BMD-1740-B03 (1 Oct 1740), Jean-Germain Lachat (brother of Jean-Pierre) serves as godfather alongside Jacques-Ignace Voisard’s attestation.

1741

• Lachat Civic Witnessing:
• 
  
  • BMD-1741-D01 (22 Feb 1741): At the burial of Anne Jeanbrun, Jean-Germain Lachat serves as the primary parish witness alongside Jean-Claude Bonnot.

1742

• The Emergence of Dual Registers (Simultaneum):
• 
  
  • BMD-1742-D02 (22 Feb 1742) & BMD-1742-M01 (22 May 1742): In the Catholic records, Jean-Germain Lachat continues his regular duties as the primary civic witness for burials and marriages alongside the new schoolmaster, Joseph Guenot.
  • BMD-1742-B02 (27 Apr 1742): At the baptism of Jeanne-Claudine Magnin, the mother is recorded as Anne-Marie Jourot, illustrating the broader presence of the Jourot family in the Glémont/Montécheroux parish.
  • Protestant Lutheran Records (BMD-1742-D03 through BMD-1742-B11): The Protestant register opens under Pastor Pierre Doriot, documenting Swiss families and collateral names (Hugueniot, Bouvier, Charton, Queslet, Guental, Méquillet).

1743

• A Double Lachat Marriage & The Passing of Jacques-Ignace Voisard:
• 
  
  • BMD-1743-M01 (5 Feb 1743): Jean-Pierre Lachat [LACH-003] (your 6th great-grandfather), son of Laurent Loichat [LACH-001] and Agathe Maire [LACH-002], marries Marie-Anne Labbé [LACH-004] (your 6th great-grandmother) of Trévillers.
  • BMD-1743-M02 (5 Feb 1743): In a coordinated family double wedding on the very same day, Jean-Pierre’s brother, François-André Lachat [LACH-016] (your 6th great-granduncle), marries Marie-Anne’s sister, Anne-Françoise Labbé [LACH-017] (your 6th great-grandaunt). Both acts are witnessed by their kinsman Jean-Germain Lachat.
  • BMD-1743-D01 (2 May 1743): Jacques-Ignace Voisard / Voysard [VOIS-003] (your 7th great-grandfather) passes away at approximately age 80 and is buried in the Montécheroux cemetery. Jean-Germain Lachat attends and signs as the official witness for his burial.

1744 – 1746

• Inter-Parish Continuity & Collateral Voisard Connections:
• 
  
  • Throughout 1744 and 1745, Lutheran records predominate under Pastors J.N. Charrière and J.N. Méquillet.
  • BMD-1745-M03 (21 Sep 1745) & BMD-1745-D11 (27 Oct 1745): In the Catholic records, Agathe Voisard (age 54, wife of Jean-Pierre Vaugier and mother of bride Foi Vaugier) dies and is buried, marking another branch of the extended Voisard family in Montécheroux.

1751

• The Union of Voisard and Jourot:
• 
  
  • BMD-1751-M02 (23 May 1751): A pivotal ancestral marriage occurs. Jean-Jacques Voisard / Voyrand [VOIS-005 / JOUR-005] (your 6th great-grandfather), son of the late Jacques-Ignace Voisard [VOIS-003] and late Agathe Prétot [VOIS-004], marries Jeanne-Antoine Jourot [JOUR-004 / VOIS-006] (your 6th great-grandmother). Her father, Jean Jourot [JOUR-001] (your 7th great-grandfather), attends and formally consents.

1752

• Collateral Sponsorship & Witnessing:
• 
  
  • BMD-1752-B01 (26 Aug 1752): Marie-Anne Lachat [LACH-019] (your 6th great-grandaunt) serves as godmother (marraine) for Marie-Anne Lenoir.
  • BMD-1752-D01 (1 Nov 1752): Jean Jourot [JOUR-001] (your 7th great-grandfather) serves as an attesting witness at the burial of Catherine Jolissaint.

1753

• Birth of Jeanne-Marie Voisard & The Winter Tragedies:
• 
  
  • BMD-1753-B01 (15 Feb 1753): Anne-Marie Lachat serves as godmother for Marie-Anne Macabré.
  • BMD-1753-B02 (27 Jun 1753): Jeanne-Marie Voisard / Voysard [VOIS-008 / JOUR-008] (your 5th great-grandaunt) is born and baptized. She is the first child of Jean-Jacques Voisard [VOIS-005] and Jeanne-Antoine Jourot [JOUR-004].
  • BMD-1753-B03 (14 Oct 1753): François-André Lachat [LACH-016] (your 6th great-granduncle) serves as godfather (parrain) for Marie-Geneviève Lenoir.
  • BMD-1753-D01 (Dec 1753 / Jan 1754): Jean Jourot [JOUR-001] (7xGgf) and his son-in-law Jean-Jacques Voisard [VOIS-005] (6xGgf) both serve together as witnesses following the discovery and burial of Claude-Ignace Magnin, who perished in a winter snowstorm returning from Saint-Hippolyte.

1754

• Birth of Pierre-Antoine Voisard & Jourot Civic Ties:
• 
  
  • BMD-1754-B02 (7 Apr 1754): Pierre-Joseph Lachat serves as godfather to Pierre-Joseph Froidevaux.
  • BMD-1754-M01 (13 Jul 1754): At the marriage of Claude Bonnot and Marie-Agnès Curtil, Jean Jourot [JOUR-001] (7xGgf) and Jean-Jacques Voisard [VOIS-005] (6xGgf) act as key witnesses.
  • BMD-1754-B04 (17 Dec 1754): Pierre-Antoine Voisard / Voyrard [VOIS-011 / JOUR-011] (your 3x/5x great-granduncle) is born and baptized. He is the son of Jean-Jacques Voisard [VOIS-005] and Jeanne-Antoine Jourot [JOUR-004]. Françoise Jourot serves as godmother. (Note: While your descendancy chart indicates an estimated 1754 birth for Jean Germain Voisard [VOIS-009], the register establishes that Pierre-Antoine was born in December 1754, with Jean Germain following in this period).

1755

• The Death of Jean-Jacques Voisard:
• 
  
  • BMD-1755-D01 (28 Aug 1755): Jean-Jacques Voisard [VOIS-005 / JOUR-005] (your 6th great-grandfather) dies prematurely at approximately age 40 and is buried on August 29. His father-in-law, Jean Jourot [JOUR-001] (your 7th great-grandfather), attends and stands as witness to his burial.

1760

• Baptism of Pierre-Ignace Lachat:
• 
  
  • BMD-1760-B01 (24 Jan 1760): Pierre-Ignace Lachat / Lorichat [LACH-124] is born and baptized, child of Jean-Pierre Lachat [LACH-003] (6xGgf) and Marie-Anne Labbé [LACH-004] (6xGgm). Marie-Anne Lachat [LACH-019] (6xGga) serves as godmother.

1761

• The Passing of Matriarch Agathe Maire:
• 
  
  • BMD-1761-D03 (24 Sep 1761): Agathe Maire [LACH-002] (your 7th great-grandmother) dies at age 70 and is buried on September 25. Her mourning husband, Laurent Loichat / Lachat [LACH-001] (your 7th great-grandfather), and their son, François-André Lachat [LACH-016] (your 6th great-granduncle, who signs F.A. Loichat), both attend and attest to the register.

1762

• Collateral Sponsorships & Baptism of Marie-Thérèse Lachat:
• 
  
  • BMD-1762-B01 (10 Mar 1762): Marie-Anne Lachat [LACH-019] (6xGga) serves as godmother for Marie-Anne-Geneviève Bonnot.
  • BMD-1762-B03 (29 Jul 1762): Marie-Thérèse Lachat / Lorich [LACH-125] is born and baptized to Jean-Pierre Lachat [LACH-003] (6xGgf) and Marie-Anne Labbé [LACH-004] (6xGgm). Marie-Thérèse Voisard serves as godmother.

1764

• A Year of Heavy Bereavement for the Lachat Household:
• 
  
  • BMD-1764-D01 (22 Jan 1764): Young Claude-Joseph Lachat [LACH-126] (age 8), son of Jean-Pierre Lachat [LACH-003] and Marie-Anne Labbé [LACH-004], passes away and is buried.
  • BMD-1764-D02 (9 Mar 1764): Infant daughter Marie-Thérèse Lachat [LACH-125] (age 1.5), baptized in July 1762, dies and is buried.
  • BMD-1764-D03 (26 Mar 1764): Family patriarch Laurent Loichat / Lachat [LACH-001] (your 7th great-grandfather) passes away at age 73, having survived his wife Agathe Maire by two and a half years. He is buried on March 27. Pierre-Joseph Lachat serves as the attending family witness across all three 1764 burials.

Summary of Key Ancestral Milestones (1740–1764)

Year	Event Type	Primary Individuals & Ancestral Role	Capacity / Significance
1740	Baptism & Marriage	Laurent Loichat (7xGgf), Agathe Maire (7xGgm), Jacques-Ignace Voisard (7xGgf)	Baptism of Marie-Anne Lachat [LACH-019]; Jacques-Ignace acts as premier parish witness.
1743	Marriage & Death	Jean-Pierre Lachat (6xGgf) & Marie-Anne Labbé (6xGgm); Jacques-Ignace Voisard (7xGgf)	Major double wedding with François-André Lachat; Death of patriarch Jacques-Ignace Voisard.
1751	Marriage	Jean-Jacques Voisard (6xGgf) & Jeanne-Antoine Jourot (6xGgm), Jean Jourot (7xGgf)	Core marriage uniting the Voisard and Jourot lines in Montécheroux.
1753	Baptism	Jeanne-Marie Voisard (5xGga), Jean-Jacques Voisard (6xGgf), Jeanne-Antoine Jourot (6xGgm)	Birth of first recorded child of the Voisard-Jourot marriage.
1754	Baptism	Pierre-Antoine Voisard (3x/5xGgu), Jean-Jacques Voisard (6xGgf), Jeanne-Antoine Jourot (6xGgm)	Birth and baptism of son Pierre-Antoine in Montécheroux.
1755	Death	Jean-Jacques Voisard (6xGgf), Jean Jourot (7xGgf)	Untimely death of Jean-Jacques Voisard (~40 yrs); Jean Jourot acts as burial witness.
1760	Baptism	Pierre-Ignace Lachat [LACH-124], Jean-Pierre Lachat (6xGgf), Marie-Anne Labbé (6xGgm)	Birth and baptism of son Pierre-Ignace.
1761	Death	Agathe Maire (7xGgm), Laurent Loichat (7xGgf), François-André Lachat (6xGgu)	Death of matriarch Agathe Maire; witnessed by husband Laurent and son François-André.
1764	Death (×3)	Claude-Joseph Lachat, Marie-Thérèse Lachat, Laurent Loichat (7xGgf)	Major triple bereavement: loss of two young children and patriarch Laurent Loichat.

The Next 25 Years

Here is the detailed, year-by-year narrative analysis of the Montécheroux BMD records from 1765 to 1789, cross-referenced against your combined descendancy register.

This second era captures the civic leadership of the Lachat line, key marriages, the births of the next generation of the Voisard family, and the passing of several central ancestors.

1765 – 1766

• François-André Lachat as Royal Mayor & Monnot Marriages:
• 
  
  • BMD-1765-D01 (15 May 1765): François-André Lachat [LACH-016] (your 6th great-granduncle) appears formally in his official civic capacity as Maire (Mayor) of Montécheroux, attesting to the burial of infant Claude-Françoise Cagnon.
  • BMD-1765-M01 (20 May 1765): Marie-Anne Lachat [LACH-019 / LACH-129] (your 6th great-grandaunt), daughter of the late Laurent Loichat [LACH-001] and late Agathe Maire [LACH-002], marries Claude-Joseph Monnot [LACH-018 / LACH-130]. Her brother, Mayor François-André Lachat, attends and signs as the primary witness.
  • BMD-1766-B01 (2 Feb 1766): Marie-Angélique Lachat [LACH-006 / VOIS-010] (your 5th great-grandmother) serves as godmother (marraine) for Marie-Angélique Bonnot alongside Joseph Lachat.
  • BMD-1766-B02 (7 Mar 1766): François-Xavier Monnot [LACH-131] (your 1st cousin 6x removed) is born to Claude-Joseph Monnot and Marie-Anne Lachat. Mayor François-André Lachat serves as godfather (parrain), signing the register as Fr. A. Lachat maire.
  • BMD-1766-B04 (13 May 1766): Marie-Madeleine Voisard serves as godmother to Marie-Madelaine Gaucherot.
  • BMD-1766-D03 (6 Nov 1766): Mayor François-André Lachat serves as official witness (Maire du Roy) at the burial of Jean-Jacques Mackingbrey.

1767 – 1769

• Pierre-Antoine Voisard’s Passing & Collateral Lachat Roles:
• 
  
  • BMD-1767-D05 (19 Jan 1767): Pierre-Antoine Voisard / Voitard [VOIS-011 / JOUR-011] (your 3x/5x great-granduncle), born in late 1754, passes away at age 13. His grandfather, Jean Jourot [JOUR-001] (your 7th great-grandfather), attends and stands as witness to his burial.
  • BMD-1767-M01 (20 Jun 1767) & BMD-1768-M03 (16 Feb 1768): Pierre-Joseph Lachat (brother of Marie-Angélique) serves as an attesting witness for local marriages.
  • BMD-1769-M01 (23 Jan 1769): Mayor François-André Lachat serves as official witness at the wedding of Antoine Hydoux and Catherine-Pétronille Frotté.
  • BMD-1769-B02 (14 Apr 1769): Pierre-Joseph Lachat serves as godfather to Pierre-Joseph Horny.

1770 – 1771

• Loss of Jean-Félix Lachat & Second Marriage of Jeanne-Antoine Jourot:
• 
  
  • BMD-1770-B01 (11 Jan 1770): Mayor François-André Lachat serves as godfather to André-François-Joseph Hydoux (Maire du Roi à Montchéroux).
  • BMD-1770-D01 (30 Jul 1770): Jean-Félix Lachat [LACH-005] (your 5th great-granduncle), son of Jean-Pierre Lachat [LACH-003] and Marie-Anne Labbé [LACH-004], passes away at the young age of 20. His uncle, Mayor François-André Lachat, attends and signs the burial act.
  • BMD-1770-M03 (21 Oct 1770): Jeanne-Antoine Jourot [JOUR-004 / VOIS-006] (your 6th great-grandmother, widow of Jean-Jacques Voisard) enters a second marriage with Étienne Chèvre [JOUR-006] of Mandeure. The marriage is witnessed by her father Jean Jourot [JOUR-001] (7xGgf) and Mayor François-André Lachat [LACH-016].
  • BMD-1771-D01 (10 Jan 1771): Joseph-André-Melchior Monnot [LACH-132] (your 1st cousin 6x removed, son of Claude-Joseph Monnot and Marie-Anne Lachat) dies at age 2. Mayor François-André Lachat attends as official witness.

1772 – 1773

• The Deaths of Marie-Anne Lachat, Claudine Poupeney, and Jean-Pierre Lachat:
• 
  
  • BMD-1772-B02 (23 Mar 1772) & BMD-1772-D02 (15 May 1772): Pierre-Ambroise Monnot [LACH-133] is born to Claude-Joseph Monnot and Marie-Anne Lachat [LACH-019]. Marie-Angélique Lachat [LACH-006] (5xGgm) serves as godmother. Tragically, the infant dies six weeks later on May 15.
  • BMD-1772-D01 (17 Apr 1772): Just weeks after childbirth, Marie-Anne Lachat [LACH-019 / LACH-129] (your 6th great-grandaunt) passes away at age 32.
  • BMD-1772-D03 (25 May 1772): Claudine Poupeney [JOUR-003] (second wife of your 7th great-grandfather Jean Jourot) dies at age 80 and is buried on May 26.
  • BMD-1773-D01 (1 Apr 1773): Patriarch Jean-Pierre Lachat / Loichat [LACH-003] (your 6th great-grandfather) dies at age 57 and is buried on April 2. His brother, François-André Lachat [LACH-016], attends and signs the register (fr. a lachat).
  • BMD-1773-B04 (20 Jun 1773): Marie-Agnès Lachat serves as godmother to Pierre-Joseph Angonin.

1774

• The Direct Ancestral Union of Voisard and Lachat:
• 
  
  • BMD-1774-M01 (18 Jan 1774): Jeanne-Marie Voisard [VOIS-008 / JOUR-008] (your 5th great-grandaunt), daughter of the late Jean-Jacques Voisard and Jeanne-Antoine Jourot, marries Ursanne Brischos of Burnevillard. Mayor François-André Lachat attends as witness.
  • BMD-1774-M02 (30 May 1774): A foundational ancestral marriage. Jean-Germain Voisard [VOIS-009 / LACH-007 / JOUR-009] (your 5th great-grandfather, age ~20) marries Marie-Angélique Lachat [LACH-006 / VOIS-010 / JOUR-010] (your 5th great-grandmother, age ~24), daughter of the late Jean-Pierre Lachat and Marie-Anne Labbé. The wedding is witnessed by her uncles and brothers, François-André Lachat and Pierre-Joseph Lachat.

1775 – 1776

• Birth of Pierre-François Voisard & Lachat Alliances:
• 
  
  • BMD-1775-B01 (10 Jan 1775): Marie-Agnès Brischos is born to Ursanne Brischos and Jeanne-Marie Voisard [VOIS-008]. Françoise Voisard serves as godmother.
  • BMD-1775-B03 (13 Feb 1775): Pierre-François Voisard [VOIS-012 / LACH-008 / JOUR-012] (your 4th/5th great-granduncle) is born and baptized, the firstborn son of Jean-Germain Voisard and Marie-Angélique Lachat. Pierre-François Lachat serves as godfather, and Madeleine Voisard serves as godmother.
  • BMD-1775-M01 (3 Jul 1775): Pierre-Joseph Lachat (provincial soldier in the Vesoul Regiment, son of the late Jean-Pierre Lachat and Marie-Anne Labbé) marries Marie-Thérèse George.
  • BMD-1775-D01 (4 Sep 1775): Anne-Marie Jourot (age 70, wife of Pierre-Blaise Magnin) dies at the Métairie de Clémont. Mayor François-André Lachat serves as official witness.
  • BMD-1776-B04 (21 Jul 1776): Pierre-Joseph Lachat (son of Pierre-Joseph and Marie-Thérèse George) is baptized; Pierre-Claude Lachat [LACH-123] (5xGgu) serves as godfather.
  • BMD-1776-B07 (22 Dec 1776) & BMD-1776-D03 (24 Dec 1776): Jean-Germain Brischos is born to Ursanne Brischos and Jeanne-Marie Voisard [VOIS-008]. His uncle Jean-Germain Voisard [VOIS-009] (5xGgf) and Marie-Anne Jourot serve as godparents. Sadly, the infant dies two days later.

1777 – 1779

• Births of Jean-Joseph & Pierre-François-Xavier Voisard; Loss of Infant Pierre-François:
• 
  
  • BMD-1777-B02 (12 Jun 1777): Jean-Joseph Voisard [VOIS-013 / LACH-009 / JOUR-013] (your 4th/5th great-granduncle) is born and baptized, second son of Jean-Germain Voisard and Marie-Angélique Lachat.
  • (Note: Infant Pierre-François Voisard [VOIS-012], born 1775, passed away on 6 Sep 1777 per your descendancy register).
  • BMD-1777-D04 (4 Oct 1777): Marie-Agnès Brischos (age 2.5, daughter of Ursanne Brischos and Jeanne-Marie Voisard) passes away.
  • BMD-1778-B02 (23 Jan 1778): Pierre-François Brischos is born to Ursanne Brischos and Jeanne-Marie Voisard [VOIS-008]. Claude-Ursule Voisard and Françoise Voisard serve as godmothers.
  • BMD-1778-B08 (24 Aug 1778) & BMD-1778-M01 (6 Oct 1778): Pierre-Joseph Lachat baptizes a son and serves as marriage witness for Jean-Jacques Brischor.
  • BMD-1779-B01 (9 Mar 1779): Pierre-François-Xavier Voisard [VOIS-014 / LACH-010 / JOUR-014] (your 4th/5th great-granduncle) is born and baptized, third son of Jean-Germain Voisard and Marie-Angélique Lachat. His uncle Pierre-Ignace Lachat [LACH-124] and Françoise Voisard serve as godparents.
  • BMD-1779-B04 (28 Dec 1779): Pierre-François Lachat is baptized to Pierre-Joseph Lachat and Marie-Thérèse George; Pierre-François Lachat and Geneviève Lachat serve as godparents.

1780 – 1783

• Birth of Jeanne-Angélique Voisard & Marriage of Marie-Agnès Lachat:
• 
  
  • BMD-1780-B02 (29 Sep 1780): Étienne-Joseph Brischor is born to Ursanne Brischor and Jeanne-Marie Voisard [VOIS-008].
  • BMD-1780-B03 (30 Nov 1780): Marie-Agnès Voisard is born to Jean-Germain Voisard and Marie-Angélique Lachat. Her uncle Pierre-Ignace Lachat [LACH-124] serves as godfather, signing P G Lachat. (This child aligns with the estimated 1781 birth of daughter Marie-Anne Voisard [VOIS-015 / LACH-011]).
  • BMD-1781-B02 (30 Jan 1781): Jeanne-Marie Voisard [VOIS-008] and Pierre-Joseph Lachat serve together as godparents for Jeanne-Marie Brichor.
  • BMD-1781-M01 (24 Apr 1781): Marie-Agnès Lachat (daughter of late Jean-Pierre Lachat and Marie-Anne Labbé) marries village schoolmaster Georges Nageotte. Her brothers Pierre-François Lachat and Pierre-Claude Lachat attend and sign as witnesses.
  • BMD-1782-B01 (2 Feb 1782): Modeste-Cyprien Lachat is born to Pierre-Joseph Lachat and Marie-Thérèse George.
  • BMD-1783-B02 (6 Feb 1783): A direct lineal ancestor is born. Jeanne-Angélique Voisard [VOIS-016 / LACH-012 / JOUR-016] (your 4th/5th great-grandmother) is born and baptized to Jean-Germain Voisard and Marie-Angélique Lachat. Modeste-Cyprien Frésard and Jeanne-Claude Brudot serve as godparents.
  • BMD-1783-D01 (15 Feb 1783): Marguerite Lachat (age 24, daughter of the late Jean-Pierre Lachat and Marie-Anne Labbé) dies; her brother Pierre-Ignace Lachat serves as burial witness.
  • BMD-1783-B04 (3 Sep 1783): Jeanne-Marie Brischor is born to Ursanne Brischor and Jeanne-Marie Voisard [VOIS-008]; Jeanne-Antoinette Jourot serves as godmother.
  • BMD-1783-D03 (5 Oct 1783): Jeanne-Antoine Jourot [JOUR-004 / VOIS-006] (your 6th great-grandmother, wife of Étienne Chèvre) passes away at age 53 and is buried on October 6.

1784 – 1786

• Births of François-Victor & Jean-François Voisard; Marriage of Pierre-François Lachat:
• 
  
  • BMD-1784-B04 (18 Nov 1784): François-Victor Voisard [VOIS-018 / LACH-120 / JOUR-018] (your 3x/4x great-granduncle) is born and baptized to Jean-Germain Voisard and Marie-Angélique Lachat. His cousin François-Xavier Monnot [LACH-131] serves as godfather.
  • BMD-1785-B01 (23 Mar 1785): Pierre-Claude Lachat [LACH-123] serves as godfather to Claude-Baptiste Genin, signing pierre claudeloirchot.
  • BMD-1785-B02 (1 May 1785): François-Joseph Monnin is born to Pierre-Ambroise Monnin and Jeanne-Marie Voisard.
  • BMD-1785-D05 (5 Dec 1785) & BMD-1785-B03 (13 Dec 1785): Étienne-Joseph Brischor (age 5, son of Ursanne and Jeanne-Marie Voisard) passes away; a week later, another son, Hugues-Joseph Brischor, is born and baptized.
  • BMD-1786-B02 (14 Feb 1786): Jeanne-Marie Voisard [VOIS-008] serves as godmother to Marie-Josèphe Brakier.
  • BMD-1786-M01 (7 May 1786): Pierre-François Lachat (son of late Jean-Pierre Lachat and Marie-Anne Labbé) marries Jeanne-Catherine Jobin of Chamesol. Mayor François-André Lachat attends as official witness (Maire), alongside Jean-Germain Voisard [VOIS-009] (5xGgf), who signs J.G. Voisard.
  • BMD-1786-B04 (8 Jun 1786): Jean-François Voisard [VOIS-019 / LACH-121 / JOUR-019] (your 3x/4x great-granduncle) is born and baptized to Jean-Germain Voisard and Marie-Angélique Lachat.
  • BMD-1786-D01 (11 Sep 1786): Anne-Françoise Labbé / Jeanne-Françoise [LACH-017 / LACH-128] (your 6th great-grandaunt), wife of Mayor François-André Lachat, dies at age 75. Her nephews Pierre-François Lachat and Pierre-Claude Lachat attend and sign as witnesses.

1787 – 1789

• Birth of Pierre-Louis Voisard, Passing of Matriarch Marie-Anne Labbé, & Eve of Revolution:
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  • BMD-1787-B01 (5 Mar 1787): Pierre-Augustin Lachat is born to Pierre-François Lachat and Jeanne-Catherine Jobin.
  • BMD-1788-D01 (23 Feb 1788): Marie-Geneviève Lachat (age 44, daughter of late Jean-Pierre Lachat and Marie-Anne Labbé) passes away; brothers Pierre-Joseph and Pierre-Claude Lachat and brother-in-law Jean-Germain Voisard attend the burial.
  • BMD-1788-D02 (13 Jun 1788): Marie-Thérèse Voisard (age 60, shepherdess) passes away; her nephew Jean-Germain Voisard [VOIS-009] (5xGgf) attends and signs as witness.
  • BMD-1788-D03 (13 Sep 1788): Marie-Anne Labbé [LACH-004] (your 6th great-grandmother), widow of Jean-Pierre Lachat, passes away at age 70 and is buried on September 14. Her son Pierre-François Lachat attends and signs as witness.
  • BMD-1788-B03 (3 Oct 1788): Pierre-Louis Voisard [VOIS-020 / LACH-122 / JOUR-020] (your 3x/4x great-granduncle) is born and baptized to Jean-Germain Voisard and Marie-Angélique Lachat.
  • BMD-1789-D01 (6 Jan 1789): On the eve of the French Revolution, Pierre-Claude Lachat [LACH-123] serves as official parish witness at the burial of Marie-Agnès Virit, signing pierre claude loichot.

Master Chronological Summary of Direct Line & Core Relatives (1765–1789)

Year	Event Type	Primary Individuals & Ancestral Role	Capacity / Significance
1765	Marriage	Marie-Anne Lachat [LACH-019] & Claude-Joseph Monnot; François-André Lachat (6xGgu)	Marriage of 6xGga; François-André Lachat acts as official Mayor (Maire).
1766	Baptism	Marie-Angélique Lachat [LACH-006] (5xGgm); François-André Lachat (6xGgu)	Marie-Angélique serves as godmother; Mayor François-André sponsors François-Xavier Monnot.
1767	Death	Pierre-Antoine Voisard [VOIS-011] (3x/5xGgu), Jean Jourot [JOUR-001] (7xGgf)	Passing of young Pierre-Antoine (age 13); witnessed by grandfather Jean Jourot.
1770	Marriage & Death	Jeanne-Antoine Jourot [JOUR-004] (6xGgm); Jean-Félix Lachat [LACH-005] (5xGgu)	Second marriage of Jeanne-Antoine Jourot to Étienne Chèvre; Death of young Jean-Félix Lachat.
1772	Death (×2)	Marie-Anne Lachat [LACH-019] (6xGga); Claudine Poupeney [JOUR-003]	Tragic postpartum death of Marie-Anne Lachat; death of Jean Jourot’s wife Claudine.
1773	Death	Jean-Pierre Lachat [LACH-003] (6xGgf), François-André Lachat (6xGgu)	Death of patriarch Jean-Pierre Lachat (age 58); witnessed by brother François-André.
1774	Marriage	Jean-Germain Voisard (5xGgf) & Marie-Angélique Lachat (5xGgm)	Direct ancestral union uniting the Montécheroux Voisard and Lachat family branches.
1775	Baptism	Pierre-François Voisard [VOIS-012] (4x/5xGgu)	Birth and baptism of firstborn son to Jean-Germain Voisard & Marie-Angélique Lachat.
1777	Baptism	Jean-Joseph Voisard [VOIS-013] (4x/5xGgu)	Birth and baptism of second son to Jean-Germain Voisard & Marie-Angélique Lachat.
1779	Baptism	Pierre-François-Xavier Voisard [VOIS-014] (4x/5xGgu)	Birth and baptism of third son; sponsored by uncle Pierre-Ignace Lachat.
1780	Baptism	Marie-Agnès (Marie-Anne) Voisard [VOIS-015] (4x/5xGga)	Birth and baptism of daughter; sponsored by uncle Pierre-Ignace Lachat.
1783	Baptism & Death	Jeanne-Angélique Voisard [VOIS-016] (4x/5xGgm); Jeanne-Antoine Jourot [JOUR-004] (6xGgm)	Birth of direct lineal ancestor Jeanne-Angélique Voisard; Death of grandmother Jeanne-Antoine Jourot.
1784	Baptism	François-Victor Voisard [VOIS-018] (3x/4xGgu)	Birth and baptism of son; sponsored by cousin François-Xavier Monnot.
1786	Baptism, Marriage, Death	Jean-François Voisard [VOIS-019] (3x/4xGgu); Pierre-François Lachat; Anne-Françoise Labbé [LACH-017]	Birth of son Jean-François; Marriage of Pierre-François Lachat (witnessed by J.G. Voisard); Death of mayor’s wife Anne-Françoise Labbé.
1788	Baptism & Death (×2)	Pierre-Louis Voisard [VOIS-020] (3x/4xGgu); Marie-Anne Labbé [LACH-004] (6xGgm)	Birth of son Pierre-Louis; Death of matriarch Marie-Anne Labbé (age 70); Death of Marie-Thérèse Voisard.
1789	Burial Witness	Pierre-Claude Lachat [LACH-123] (5xGgu)	Civic witness signature on the eve of the French Revolution.