Question: Who is Juan De La Cerda, 6Th Duke Of Medinaceli's paternal grandfather?
Sentence (from "Juan de la Cerda, 6th Duke of Medinaceli"): In 1580 he married Ana de la Cueva, daughter of Don Gabriel de la Cueva, 5th Duke of Alburquerque with whom he had one daughter.
Relevant evidence: No