Branch A — Prove Pierre's parents

Search the Le Nouvion-en-Thiérache parish records around 1674 for Pierre's baptism.

Target:

Pierre LAGASSE

c. 1674

son of Michel LAGASSE + Laurance DEVIMEUR

Branch B — Reconstruct Pierre + Jeanne's family

Find the baptism/marriage records for:

• Maria
• Marie Françoise
• Jeanne
• Ludovicus
• Anne Maria

This will establish their birth order, dates, godparents, and potentially the family's movements.

Branch C — Investigate the Bertrand DNA

For each of your two DNA matches, we want:

Match → their Bertrand ancestor → that ancestor's parents → grandparents → location

Then compare those pedigrees against Jeanne Bertrand.

Most importantly

Your Filae information gives us a much clearer working lineage: