Charles Loyson, known as Pere Hyacinthe, a French pulpit orator, born in Orleans, March 10, 1827. He studied at the academy in Pan, and in his boyhood produced some verses which attracted notice. He entered the theological school of St. Sulpice at the age of 18, and after four years was ordained a priest. He taught philosophy at the high school of Avignon and theology at Nantes, and subsequently officiated ten years as priest in the parish of St. Sulpice. He then passed two years as a novice in the convent of the Carmelites at Lyons, entered the order, and attracted much attention by his preaching at the lyceum in that city. He preached the Advent sermons in Bordeaux in 1863, and Lent sermons at Perigueux in 1864, and in the next summer went to Paris, preaching first at the Madeleine and afterward at Notre Dame (1865-'9). In 1867 he preached upon the family. The liberal tenor of some of his enunciations attracted attention, and his popularity rapidly increased. Gradually a suspicion of his orthodoxy grew up, and in 1869 he was summoned by the pope, but succeeded in clearing himself.

In June of that year, however, he delivered an address before the international peace league, in which he spoke of Judaism, Catholicism, and Protestantism as "the three great religions of civilized peoples." This expression was strongly condemned by the Catholic press, and he was commanded by the general of his order at Rome to change his manner of speech or to be silent. To this he replied in a letter of Sept. 20, in which he protested against perversion of the gospel, and declared his conviction that if France and the Latin races were given up to social, moral, and religious anarchy, the principal cause was not Catholicism itself, but the manner in which Catholicism had been for a long time understood and practised. This utterance was looked upon as an attack upon the order of the church, and was hailed with enthusiasm by the opponents of the papacy. He was threatened with the major excommunication, and was practically forbidden to preach in Notre Dame. He left France for a visit to America, landing in New York Oct. 18, 1869, where he was warmly welcomed by Protestants of many denominations; but he declared that he had no intention of quitting the Catholic church, and refrained from any public speaking. He returned to France toward the end of the year.

In February, 1870, the pope relieved him from his monastic vows, and he became a secular priest under the title of the abbe Loyson. He earnestly protested against the declaration of the infallibility of the pope by the council of 1870, and after the entrance of the troops of Victor Emanuel into Rome he visited that city, where he delivered a se-ries of discourses. In September, 1871, he attended the " Old Catholic " congress at Munich. In 1872, in a series of sermons and letters which attracted great attention, he defended the right of the clergy to marry; and in the same year he was himself married to an American lady. On Oct. 11, 187.3, he was appointed one of the three curates of the Old Catholics of Geneva. Bishop Mermillod issued an interdict against these appointments, but his authority was denied by the Old Catholic body, and by Loyson himself in a published letter of Oct. 19, 1873. In August, 1874, he resigned his charge.