Career
Believed to have been a native of Besançon, he was a relative of the Norman Roger I of Sicily. After the expulsion of the Saracens from Sicily, in 1088 (or 1093) Roger summoned Gerland as the first post-Saracen bishop of Agrigento, to re-establish the church throughout the island. He was canonised in 1159.
His relics are in a silver urn in Agrigento Cathedral, which has been dedicated to him since its rebuilding by bishop Bertaldo di Labro in 1305.
His feast day is 25 February.