Often Châteaubriand; the modern spelling of the place is Châteaubriant; the château had been rebuilt magnificently by Jean de Laval, baron de Châteaubriant, whose wife, Françoise de Foix, had been a mistress of François I; the baron had made a gift of it in 1539/40 to the connétableAnne de Montmorency. (Abbé Guillotin de Corson, "Châteaubriant, baronnie, ville et paroisse" in Abbé Goudé, Histoire politique et civile de Châteaubriant (1869), pt. I, ch. vi:On-line text, and following chapters
