Saint Marcouf was a 6th-century Benedictine abbot and bishop born in the Saxon colony of Bayeux. He served as the abbot at Nantus in the Cotentin and is historically linked to Saint Helier, whom he dispatched to convert the residents of Jersey to the Christian faith. After performing various miracles during his travels, he passed away on May 1, 558, at the Îles Saint-Marcouf. He is traditionally recognized for his connection to the healing of scrofula through the power of his relics.