John I of Castile
Through the arch that gives access to the presbytery are two small altars in neoclassical style. The main altar is by Mateo Medina. It has a painting by Maella with the theme of the Descension, framed by two Corinthian columns. On both sides of this altar are tombs with the respective praying statues of John I of Castile and his wife Eleanor of Aragon.