Maria married John on 4 Aug 1420 in Avila, Avila, Castilla-Leon, Spain. John (son of Henry III of Castile and Catherine of Lancaster) was born in 1405 in Toro, Zamora, Castilla-Leon, Spain; died in 1454 in Valladolid, Valladolid, Castilla-Leon, Spain. [Group Sheet] [Family Chart]

1. Catalina of Del Asturias Castile y Leon was born on 5 October 1422 in Illescas, Provincia de Toledo, Castilla-La Mancha, Spain; died on 17 Sep 1424 in Madrigal, Narino, Colombia.
2. Lenor Del Asturias Castilla was born on 10 Sep 1423 in Burgos, Burgos, Castilla-Leon, Spain; died in 1425 in La Espina, Asturias, Asturias, Spain.
3. Henry Enrique IV Of Castille Leon was born on 4 January 1425 in Casa De Las Aldabas, Valladolid, Castilië-Léon, Spain; died on 11 Dec 1474 in Madrid, Madrid, Madrid, Spain.
4. Maria CASTILE was born about 1428 in Segovia, Segovia, Castilla-Leon, Spain; died on 07 Sep 1458 in Valencia, Valencia, Pais Valenciano, Spain.
5. Izabel Isabella Trastamara Castile (maid. name Queen Consort of Aragon Majorca Naples Sicily and Valencia) was born on 22 April 1451 in Madrigal De Las Altas Torres, Avila, Castilla-Leon, Spain; died on 26 November 1504 in Medina del Campo, Provincia de Valladolid, Castilla y León, Spain.