He was made bishop of Sigüenza in 1436 then archbishop of Toledo in 1446. He was made a pseudocardinal deacon of Sant'Eustachio in the consistory of 12 April 1440, but declined the promotionThe Cardinals of the Holy Roman Church - Biography of Alfonso Carrillo de Acuña From 1462 Carrillo was the main instigator of the noble Castilian faction which wanted to depose the king and replace him with his half-brother, the infante Alfonso, and he was a highly active participant in the Farce of Ávila. This began a long and bloody civil war in Castile.
