The immigrant ancestor Michel LeNeuf du Hérisson was a grandson of Venotte or Stévenotte de St-Germain (wife of Gervais Le Marchand). This St-Germain family held several manors in Normandy, and can be traced back only a few generations. Jean de St-Germain was born around 1420, and was dead by 1459. He seems to have held no estates before he married a rich heiress, Jeanne de la Poterie, in 1445, probably at Surville. Jeanne was descended from the Montfort family, among other prominent Normans. There were at least two sons, Jean and Olivier (we know this because Jeanne's brother left property to them in his will).

Olivier de St-Germain, sieur du Post, was born about 1450 and died sometime between 1487 and 1505. He married Jeanne de Rouellé (background unknown) in the early 1470s, and they were the parents of François de St-Germain, who appears in several records of the Court of Exchequer in Normandy in the early 1500s. We know that he married Hélène de Corday, and that they had a daughter (name unknown) who married in 1532, and a son Olivier de St-Germain, who married Françoise de Breul about 1540. They were the parents of the Venotte who married Gervais Le Marchand about 1570. The sieurs du Post continued in France in descent from Venotte's brother Jacques.

See Le Marchand, Leneuf and the connection between my parents through this family.