Hugh I, Count of Vermandois

Hugh, called the Great was the first count of Vermandois from the House of Capet. His wife, Adelaide de Vermandois was the heiress and holder of the title of Countess of Vermandois, holding the lineage rights, but Hugh ruled as Count of Vermandois jure uxoris from 1085 to 1101. He is known primarily for being one of the leaders of the First Crusade. His nickname Magnus is probably a bad translation into medieval Latin of an Old French nickname, le Maisné, meaning "the younger", referring to Hugh as younger brother of King Philip I of France.