Gerland of Agrigento was a 11th-century bishop born in Besançon who played a central role in re-establishing the Christian church in Sicily. A relative of the Norman ruler Roger I, he was appointed to lead the diocese of Agrigento following the expulsion of Saracen forces. Known for his scholarly expertise in ecclesiastical disciplines, he served as an instructor for the clergy and authored works on the trivium, quadrivium, and the dating of Christ's birth. He died in Agrigento on February 25, 1100.