Saint Vincent de Paul († 1660) was a French Roman Catholic priest who dedicated himself to serving the poor. After working for some time in Paris among imprisoned galley slaves, he returned to be the superior of what is now known as the Congregation of the Mission, or the "Vincentians" (in France known as "Lazaristes"). These priests, with vows of poverty, chastity, obedience, and stability, were to devote themselves entirely to the people in smaller towns and villages. Vincent was zealous in conducting retreats for clergy at a time when there was great laxity, abuse, and ignorance among them. He was a pioneer in clerical training and was instrumental in establishing seminaries, and founder of the Congregation of the Mission and Daughters of Charity of Saint Vincent de Paul.
He is a Holy Patron of charities; horses; hospitals; leprosy; lost articles; Madagascar; prisoners; Richmond, Virginia; spiritual help; Saint Vincent de Paul Societies; Sacred Heart Cathedral Preparatory; Vincentian Service Corps; and volunteers.