From his seminary days Fr.Noailles had conceived the idea of founding an association open to all vocations. He started realizing this desire in his first parish of St.Eulalie by starting the Catechism of Perseverance with lay people. In this rich soil of lay commitment, was planted the first religious community. Caroline Romain, Seconde Giraudet and Catherine Aimée Noailles came together with the desire to consecrate themselves by religious vows, to live in community and to be engaged in the service of others. They started their community on 27th May 1820, the eve of the feast of the Holy Trinity, having for all their resources only 80 francs. As time passed, they received more members, moved to other places, and responded to many needs. Fr.Noailles guided the members
spiritually and wrote their Rule of Life.  As new needs were seen and ministries increased they were organised into different Branches. The Consecrated Seculars, Priests and Contemplatives were also founded.  The Lay Associates who had been present since the beginning became more active and were solemnly received into the Association.