ألفونسو التاسع
Diego López III de Haro (b. ? – d. October 4, 1254, Bañares). Was the eldest son of Lope Díaz II de Haro and of Urraca Alfonso de León, the illegitimate daughter of King Alfonso IX of León. Diego succeeded his father as the Lord of Biscay between the years 1236 and 1254.