Question: What is the date of birth of Gaspar Alfonso Pérez De Guzmán, 9Th Duke Of Medina Sidonia's father?
Sentence (from "Gaspar Alfonso Pérez de Guzmán, 9th Duke of Medina Sidonia"): Gaspar Alfonso Pérez de Guzmán y Sandoval, 9th Duke of Medina Sidonia (1602–1664) was a Spanish nobleman who became Duke of Medina Sidonia in 1636, upon the death of Juan Manuel Pérez de Guzmán, 8th Duke of Medina Sidonia.
Relevant evidence: Yes