Question: What is the date of death of Alfonso De Aragón Y De Escobar's father?
Sentence (from "Alfonso de Aragón y de Escobar"): Alfonso (or Alonso) de Aragon y de Escobar (1417–1495), Duke of Villahermosa, Count of Ribagorza and Cortes and Grand Master of the Order of Calatrava, was an illegitimate son of John II of Aragon and Leonor de Escobar, one of his mistresses.
Relevant evidence: Yes