Gonzalo de Illescas (bishop)

Gonzalo in his study, as painted by Zurbarán (1639)
Funerary chapel of Gonzalo, designed by Egas Cueman (1458–1460)

Gonzalo de Illescas (died 22 October 1464) was a Hieronymite monk, an advisor to King John II of Castile from 1435 until 1454 and the bishop of Córdoba from 1454 until his death.