~Annals and Antiquities of Lacok Abbey, Pedigree V. pp. 263-264, The family of Vitré were descended in the male line from Martín de Rennes, a younger brother of Conan, duc de Bretagne, who died in 992. Martín de Rennes is given as the son of Jushael comté de Rennes and the father of Ruivallon. 759