poor, churches, education, etc. Eventually, the Trinitarians also assumed the work of evangelization. Brother John's founding intention expanded quickly beyond the three initial foundations (Cerfroid, Planels, Bourg-la-Reine) into a considerable network of houses committed to the ransom of Christian captives and the works of mercy conducted in their locales. Trinitarian tradition considers St. Felix of Valois co-founder of the Order and companion of John of Matha at Cerfroid, near Paris. In Cerfroid the first Trinitarian community was established and it is considered the mother house of the whole Order. Among the earliest recruits were some Englishmen, and the first to go on the special mission of the order were two English friars, who in 1200 went to Morocco and returned to France with 186 liberated Christian captives. The first generation of Trinitarians could count some fifty foundations. In northern France, the Trinitarians were known as "Mathurins" because they were based in the church of Saint-Mathurin in Paris from 1228 onwards. Ransoming captives required economic resources. Fundraising and economic expertise constituted important aspects of the Order's life. The Rule's requirement of "the tertia pars", or setting aside one-third of all income for the ransom of Christian captives, became a noted characteristic of the Order. Louis IX installed a house of their order in his château of Fontainebleau. He chose Trinitarians as his chaplains, and was accompanied by them on his crusades. The Master of the Trinity was taken captive together with Louis IX after the Battle of Al Mansurah. The rule initially was the Augustinian, supplemented by regulations of an austere character. The habit was white, with the red and blue cross depicted above on the breast. Through the centuries, the Trinitarian Rule underwent several revisions, notably in 1267 and in 1631. It has been complemented by statutes and constitutions. The thirteenth century was a time of vitality, whereas the following centuries brought periods of difficulty and even decline in some areas. The Council of Trent (1545–1563) was a major turning-point in the life of the Catholic Church. Its twenty-fifth session dealt with regulars and nuns and the reform of religious orders. Reforming interests and energies manifested themselves among Trinitarians in France with the foundation at Pontoise, north of Paris, during the last quarter of the sixteenth century. Reform-minded Trinitarians in Spain first established the movement known as the Recollection and then, under the leadership of St. John Baptist of the