Santa Juliana de Lestonnac was a French religious figure born in 1556. She is best known for founding the Order of the Blessed Virgin Mary of Mercy, also known as the Mercedarians, which focused on the education and care of young girls. Her work emphasized the importance of education and spiritual development. She dedicated her life to serving others and promoting the Christian faith. Santa Juliana was canonized as a saint by the Catholic Church in 1949, and her feast day is celebrated on February 16. Her legacy continues to inspire many in the fields of education and social service.