François de Courtenay
From NSWiki
Prince François de Courtenay (1916-1971) was a Braslander nobleman. He was the son of Prince Robert de Courtenay.
In 1941 he married his cousin Laurence d'Aigneaux. They had four children: Mónique (born 1942), Gaston (born 1943), Laurent (born 1946) and Élisabeth (born 1949).
He inherited Lix Castle and managed the adjacent estates.