Hamelin a French prelate of the 12th century, was the nephew of Odon, dean of St. Martin of Tours, and a scholastic of that church from the year 1186. He was elected bishop of Le Mans in December, 1190, and consecrated by pope Celestine III at Rome in the beginning of the following year. He established in all the parishes of his diocese the capitulary jurisdiction, and being devoted to the interests of the king of England, refused to render it to the French king. Upon this the revenues of the bishop were confiscated by the latter, who ordered also the suspension of the divine service in the Church of Le Mans. These troubles were settled in 1804. Hamelin abdicated about the middle of Lent, 1214, and died probably November 1, 1218. See Hoefer, Nouv. Biog. Generale, s.v.