He was the founder progenitor of the "Maingoval Line" which had branches which connected to f amilies of Naples, Rome and Milan in the early 1500's. One of the most illustrious seigneurs of this branch was Charles de Lannoy who became Viceroy of Naples in 1522 and was captain general of the armies of Emperor Charles V of Spain. At the battle of Pavia, in 1525, he took Francois I, the Kind of France, as his prisoner. Another branch of the Maingoval line through a natural son Antoine (bastard of Maingoval) founded a line that became known as Lannoy de Frise (Friesland in the Netherlands).