His sister Plaisance had married in 1250 Henry I.
By his wife Plaisance (daughter of Hugh of Gibelet), succeeded his father in 1233.
I of Cyprus = Plaisance of Antioch.
CHARLES FRANCOIS LEBRUN, duc de Plaisance (1739-1824), French statesman, was born at St-Sauveur-Lendelin (Manche) on the 19th of March 1739, and in 1762 made his first appearance as a lawyer at Paris.
He opposed Napoleon's restoration of the noblesse, and in 1808 only reluctantly accepted the title of duc de Plaisance (Piacenza).
Marie du Mesnil, Memoire sur le prince Le Brun, duc de Plaisance (Paris, 1828); Opinions, rapports et choix d'ecrits politiques de C. F.