Helier's wanderings led him through what is now the village of St. Hellier in the département of Seine-Maritime in Normandy and eventually to the Cotentin where he sought retreat from the distractions of the world in the monastic community of Saint Marculf at Nantus (Nanteuil, now St.-Marcouf-de-l'Isle in Manche).
Marculf sent Helier, and a companion Saint Romard, to Jersey where he found a small community of fishermen on the sand dunes where the modern town of St. Helier was to develop.