His early life was shaped by a commitment to spiritual pursuits; he renounced earthly possessions to lead an ascetic life, initially in a forest in the Diocese of Meaux.

In his later years, Felix was approached by Saint John of Matha, a young nobleman seeking guidance in establishing a religious order.

Despite being over seventy at the time, Felix readily agreed to this divine calling. The duo traveled to Rome, where, under the papacy of Innocent III, they received formal approval to found a new order. This order, known commonly as the Trinitarians, quickly expanded across Europe, establishing numerous monasteries dedicated to these laudable efforts, particularly in the context of the era’s challenges with captivity and slavery.

Felix dedicated his life to overseeing the growth of the Trinitarians in France, moving to the Monastery of Cerfroid, which became the order’s motherhouse. His faithful administration and commitment to the order’s mission are notable; he is said to have witnessed the establishment of six hundred monasteries by the order within forty years. Felix passed away on November 4, 1212, at the age of eighty-five. He was canonized by Pope Urban IV in 1262.