The popular name of the Order of Friars Preachers (Ordo Praedicatorum, abbreviated O.P.) was derived from the name of the order's founder, Domingo de Guzmán (1170–1221), generally called Dominic. In France the Dominicans were once known as Jacobins, from their priory of Saint Jacques at the University of Paris, and in England they were known as Black Friars, from the black mantles that they wore over their white habits.