Question: What is the date of death of Juan De La Cerda, 4Th Duke Of Medinaceli's father?
Sentence (from "Gastón de la Cerda, 3rd Duke of Medinaceli"): In 1536 after the death of his elder brother Luis without issue he became the heir to the family titles, so he sought a Papal dispensation in order to marry and fulfill his family obligations.
Relevant evidence: No