Gérétran of Bayeux, also known as Geretrandus, was bishop of Bayeux in the 5th century.Fisquet, Honoré Jean P. (1864). La France pontificale: Metropole de Rouen: Bayeux et Lisieux. Paris: E. Repos. page 12 He is considered a pre-congregational saint by the Roman Catholic Church, though because of the unstable times in which he lived, very little is known of his life.Essai historique sur l'antiquité de la foi dans le diocèse de Bayeux et le culte de quelques saints récemment introduits dans le calendrier liturgique de ce diocèse(Jacques LAFFETAY, 1861) pages 62-63.Origines chretiennes du Pays-Bessin. Recherches historiques et critiques sur Saint Regnobert second eveque de Bayeux. (gall.)(La Gost-Clerisse, 1861) page27.
During the Viking invasion he undertook moving the remains of saint Exuperius to a more safe location where they remain to this day.Henry Wace, A Dictionary of Christian Biography, Literature, Sects and Doctrines (1880), 439
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