Jeanne Lefebvre was born in 1645 in France. Her parents were:
On March 7, 1667, Jeanne Lefebvre married Count Pierre-René de St. Julien (aka St. Julian), in Vitré, Ile-et-Vilaine, Bretagne, France. At the time of the Revocation of the Edict of Nantes, ca. 1685, this French Protestant Huguenot aristocratic family fled France due to religious persecution. They landed in England and from there emigrated to Ireland, then under English (Protestant) rule.
Jeanne's husband and son, Pierre-René, fought with at the Battle of the Boyne, where the English-led Protestant forces defeated the Irish Roman Catholics, thereby ensuring that the northern province of Ulster (or most of it) would remain Protestant.
Jeanne and her husband are said to have had 9 children. Only 8 were in his Will, however. One daughter, Aimée, is likely to have died and perhaps one son (not named). Their 7 known children were:
Both Jeanne and Pierre de St. Julien died in Dublin, Dublin, Ireland, in 1705 and are likely buried there. Several of their children emigrated to British North America in the early 18th Century, notably to South Carolina and to Maryland.
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