Ce document présente l'histoire généalogique exceptionnelle des familles Levasseur et Ouellet, établies à Saint-Éloi au tournant du XXe siècle. Les sources détaillent comment quatre enfants d'Alphonse Levasseur ont épousé quatre enfants de William Ouellet entre 1907 et 1913, créant ainsi des liens familiaux d'une rareté mathématique remarquable. L'ouvrage explore les conséquences de ces unions, notamment la naissance de doubles cousins germains qui partagent leurs quatre grands-parents. Au-delà des données matrimoniales, le texte brosse un portrait de la vie rurale et des parcours migratoires de ces lignées fondatrices. Des analyses de recensements et des schémas de parenté illustrent l'évolution de ces ménages sur plusieurs générations. En somme, ce récit combine recherche historique et probabilités pour honorer un chapitre unique du patrimoine familial québécois.

This documentation explores the exceptional genealogical bond between the Levasseur and Ouellet families in Saint-Éloi, Quebec, during the early twentieth century. It primarily highlights four marriages between the children of Alphonse Levasseur and William Ouellet that occurred between 1907 and 1913. These unions resulted in a generation of double first cousins who share all four grandparents, a rare occurrence that impacts modern DNA analysis. Through census records and paternal lineage charts, the text traces the families' agricultural history and their migration from early pioneers to established households. The narrative combines historical data with maps and illustrations to provide a comprehensive portrait of a rural community in transition. Overall, it serves as a detailed case study of how familial social circles influenced marriage probabilities and regional heritage.

Grandma Alma Levasseur is the starting point of my questions and interest in genealogy. I never really knew her. She died at the age of 83 when I was still very young: eight decades separate us. In the few photos that are kept, we discover a woman of small size, smiling very rarely, whose spine has bent over time. Her back has curved as if the bag of the heart had become too heavy to carry.