This section is from "The American Cyclopaedia", by George Ripley And Charles A. Dana. Also available from Amazon: The New American Cyclopędia. 16 volumes complete..
Felix, called Felix of Valois, a saint of the Roman Catholic church, and founder (with John of Matha) of the order of Trinitarians, born in the district of Valois, France, April 19, 1127, died in the monastery of Cerfroi, Nov. 4, 1212. He was a man of considerable wealth, which he renounced to become a hermit in the forest of Galeresse, diocese of Meaux, where he dwelt until his 00th year. About that time John of Matha became his disciple, and inspired him with the idea of devoting his remaining years to the labor of redeeming the Christians held in bondage by the Mo-hammedans. For this purpose they both went to Rome in 1197 and submitted their design to Pope Innocent III He approved it, and in furtherance of it a new religious order was established, styled the order of the Trinity," or "for the redemption of captives," John of Matha being appointed its "minister general." Returning to France, they established a monastery in Cerfroi, which became the cradle of the order of Trinitarians. While John of Matha journeyed to Italy and Africa, Felix governed and propagated the new order.
He obtained for it an establishment in Paris, near a chapel dedicated to St. Mathurin, and from this circumstance his monks were there called les Mathurins. The order established by him is called indiscriminately Trinitarians or Re-demptionists.-See for his biography Baillet, Vies des saints, under date of Nov. 20, and Richard and Giraud, Bibliotheque sacree.