Andrew Tanca
Andrew Tanca was an obscure Judge of Logudoro in the mid-eleventh century. He may have reigned alongside his supposed father Barisone I between about 1064/1065 and 1073 or so. He was probably the father of his probable successor, Marianus I. Little else is known for certain about him, but he was probably a donor to the Abbey of Montecassino.
