Our letter for today is the letter “M.” So we have as our saint, Margaret of Hungary:
Saint Margaret, O.P. (January 27, 1242 – January 18, 1271) was a Dominican nun and the daughter of King Béla IV of Hungary and Maria Laskarina. She was the younger sister of St. Kinga of Poland (Kunegunda) and the Blessed Yolanda of Poland and, through her father, the niece of the famed Saint Elizabeth of Hungary.
The four-year-old Margaret was entrusted by her parents to the Dominican monastery at Veszprém in 1245. Six years later she was transferred to the Monastery of the Blessed Virgin founded by her parents on Nyulak Szigete (Rabbit Island) near Buda (today Margaret Island, named after her, and a part of Budapest; the ruins of the monastery can still be seen). She spent the rest of her life there, dedicating herself to religion and opposing all attempts of her father to arrange a political marriage for her with King Ottokar II of Bohemia. She appears to have taken solemn vows when she was eighteen years old. In marked contrast to the customs of her Order, she received the Consecration of Virgins along with some other royals to prevent further attempts on the part of her father to have her vows dispensed by the Pope for marriage.
More can be found out about her and her life at her wiki, located here.