A spanyol inkvizíció atyja egyébként maga is kikeresztelkedett zsidó (marrano) volt, Aragóniai Ferdinándhoz hasonlóan:

Torquemada was born in 1420, either in Valladolid, Old Castile, in the Kingdom of Castile, or in the nearby small village of Torquemada. He came from a family of conversos (converts from Judaism); his uncle, Juan de Torquemada, was a celebrated theologian and cardinal, whose grandmother was a conversa. The contemporary historian, Hernando del Pulgar, (himself a converso) recorded that Tomás de Torquemada's uncle, Juan de Torquemada, had an ancestor, Álvar Fernández de Torquemada, who was married to a first-generation conversa.