Princess Of Castile And Leon was born in 1355 in Morales, Valladolid, Spain. Princess Of Castile And Leon's father was I PEDRO and her mother was Blanche Of BOURBON. Her paternal grandparents were Alfonso XI and Maria Of PORTUGAL. She had a sister named Constanza. She was the younger of the two children. She died at the age of 37 on December 23rd, 1392.