sentences:  At some point during his episcopate, Uilleam, Mormaer of Ross, committed an outrage to the church or lands of Petty, a church belonging to a canon of Archibald's cathedral.In compensation, Uilleam granted the bishop some lands in Cadboll and elsewhere in Ross.The bishop was also involved in a dispute with Uilleam, Mormaer of Mar, which in 1268 resulted in the latter's excommunication.