This family appears to be unrelated to our other ancestors, the Bergerons dit Courchesnes.

Pierre Bergeron (born 1604, died sometime between 1666 and 1681) and his wife Catherine Marchand lived in the parish of St-Saturnin-du-Bois in the Rochefort district of the Aunis, about 25 miles from La Rochelle. Perhaps he or other relatives worked at the town's main industry, the Corderie Royale (above), making rope for the French navy. Their son André was born there in February 1642; he had a twin named Étienne who is not heard of again after their baptism, and probably died young. Catherine must have died before 1665, and there may have been no other children, because Pierre and André came together to Québec in 1665. The 1666 census finds them living in the 'upper town' of Québec city, lodging with the merchant Eustache Lambert. In 1670 André left the city to work on a farm at St-Romuald belonging to Lambert's wife. By 1672 he owned his own farm, at St-Nicolas in the seigneurie de Lauzon. There in July 1673 he married the daughter of a neighboring farmer - Marguérite Demers, whose parents were Jean Demers and Jeanne Voidy or Vedié. (This is not the same Jeanne Voidy who married Nicolas Pelletier; they came from different towns in France and died at different times and places in Canada; but it is not unreasonable to think they were related.) At the time of the 1681 census they lived on a 6-arpent farm at St-Nicolas with two cows and a gun. André died in February 1712 and his wife in September 1722.

Between 1675 and 1701 Marguérite gave birth to at least twelve children: André (1675, married Marie Grenon and Marie-Charlotte Danet); Jean (1676, married Marguerite Grenon and Marie-Madeleine Bourassa); Pierre (1678-1701); Jacques (1679?, married Marie-Agnès Grenon and Madeleine Dubois); Marie-Françoise (born and died June 1681); Marguérite (born January 1687, see below; died 1734); Marie-Anne (1690-1712); Eustache (1693-1708); Geneviève (1695); Nicolas (1697); Joseph (1699, married Marguérite Dussault), and Marie-Louise (1701).

Marguérite Bergeron married François Fréchette in 1707; see Fréchette for their thirteen children.