The place of his birth is uncertain, but it may have been Caesaraugusta (Saragossa), Tarraco (Tarragona), or Calagurris (Calahorra).
This area includes both sides of the Pyrenees from Calahorra to Upper Pallars.
This was vowed to James before the battle by Ramiro I of Asturias in Calahorra, offering Saint James part of the booty taken from the Moors along with the first fruits and crops from each year's harvest as an ex voto.
In 1366 when Henry II of Castile de Trastámara was crowned king in Calahorra, the Navarro gentleman Juan Ramirez de Arellano received from him the Lordship of Cameros in return for services rendered.
Elected archbishop of Zaragoza on April 18, 1901, but he died before taking possession of the see on July 27, 1901 in Calahorra.
One of the young children besides the senior, a sixth child, of famous literary man Iñigo López de Mendoza, (1398–1458), was the Bishop of Calahorra and of Siguenza since 1473 and later Cardinal of Toledo, the highest ecclesiastical distinction in Spain from a Pope, became to be known as Pedro González de Mendoza, (1428–1495), a.k.a. Cardinal and statesman Cardenal Mendoza.