 He was a great influence in the spiritual formation of St. Louise de Marillac who received from St. Francis de Sales the care of the Visitation nuns in Paris.In 1625, he founded the Congregation of the Mission, also called Vincentians or Lazarists, to preach and educate priests.In 1633, he founded the “little company” of the Daughters of Charity which numbered around 54,000 all over the world.