Among the Franciscans, Mary is commonly called by the title of Our Lady of the Angels. The reason for this title comes from the Life of St. Francis himself. Indeed, one of the first churches that he re-built in Assisi was a small church called the Portiuncula that was dedicated in honor of Our Lady of the Angels. Hence, the Franciscans took Mary under this title as their patroness.
The above painting was created in the late 19th century by the Pre-Raphaelite artist, Bougereau.