Question: Who is Antonio De La Cerda, 7Th Duke Of Medinaceli's paternal grandfather?
Sentence (from "Antonio de la Cerda, 7th Duke of Medinaceli"): He was the son of Don Juan de la Cerda, 6th Duke of Medinaceli, by second wife Doña Antonia de Toledo y Dávila.
Relevant evidence: Yes