Premise: Heinrich Karl Ludwig Herault de Seigneur de Hautcharmoy (1689 in Wesel – 11 May 1757 in Margaret monastery at Prague) was a Prussian Lieutenant-General, Knight of the Black Eagle and commander of Brieg. His family was originally from Kingdom of France, and his father served as subordinate to Friedrich von Schomberg, and was killed with him at the Battle of the Boyne.
Hypothesis: Heinrich Karl Ludwig Herault de Seigneur de Hautcharmoy was born in 1689 at the Margaret monastery at Prague.