Qui es va casar amb María Díaz I d'Haro?

María Díaz de Haro, anomenada la Bona (c. 1270 - 1342), fou la desena Senyora de Biscaia. Era filla de Lope Díaz III de Haro, assassinat a Alfaro (La Rioja) el juny de 1288, vuitè Senyor de Biscaia i d'una Montcada - Bearn.

John of Castile, called the "el de Tarifa" (Spanish: Juan de Castilla "el de Tarifa"; 1262–25 June 1319) was an infante of Castile and León. He was engaged in a decades-long fight for control over the Lordship of Biscay with Diego López V de Haro, the uncle of his wife.