The marriage in 1538 of Barbe de Bascoing, heir of Villemolin, to Etienne de Certaines, brought Villemolin into the heritage of the Certaines (known in Nivernais since 1296 and holding fiefs, among others, near Cervon) who still occupy it.
He gathered a large army and subjected the region of the Nivernais, Avallonais, and Tonnerre to his rule during the reigns of Childebert III and Dagobert III.