Jeanne de Lestonnac, O.D.N., (December 27, 1556 – February 2, 1640), alternately known as Joan of Lestonnac, was a Roman Catholic saint and foundress of the Sisters of the Company of Mary, Our Lady, in 1607. The new institute, approved by Paul V in 1607, was the first religious order of women-teachers approved by the Church. De Lestonnac was born in Bordeaux in 1556 to Richard de...