Mathurins or BRETHREN OF THE HOLY TRINITY, an order of monks which arose at the end of the 12th century, and got this name from having a church at Paris which claims St. Mathurin for its patron saint. All their churches were dedicated to the Holy Trinity. Sometimes they are called Brethren of the Redemption of Captives, because, originating at the period of the Crusades, they gave their labor and a third of their revenue to liberate Christian captives from Mohammedan masters. Their founders were two French recluses in the diocese of Mileaux — Jean de Mattia and Felix de Valois. By some they seem to have been called the Order of Asses, as they were permitted to use those animals only, and were debarred from riding on horses. A similar order was founded in Spain in 1228, and there called the Order of St. Mary. SEE TRINITARIANS.