The Archbishop and Duke finally came to an agreement. Archbishop Robert lifted the interdict and excommunication; Duke Robert restored the Archbishop to his see. He also gave back his countship of Evereux, and returned all his properties. Duke Robert also returned all the property that he or his vassals had taken from the church. By 1033 Duke Robert was starting a major campaign against his cousin Alan III, Duke of Brittany. He and Alan had been raiding back and forth but finally a peace was negotiated between them by Archbishop Robert, their mutual uncle. In 1035 Duke Robert had decided on a pilgrimage to Jerusalem. After making his illegitimate son William (William the Conqueror) his heir he asked the archbishop to watch over and protect his young son. Duke Robert then set out on his pilgrimage to Jerusalem never to return to Normandy. He died on his return journey.