Mécia Lopes de Haro was born circa 1215 as the daughter of Lope Díaz II de Haro, Lord of Biscay and Urraca Alfonso of Léon, who was an illegitimate daughter of Alfonso IX of Léon. She was first married on 29 September 1234 to Álvaro Pérez de Castro, but she was a childless widow by 1240. [read more]