Question: What is the date of birth of Gaspar Alfonso Pérez De Guzmán, 9Th Duke Of Medina Sidonia's father?
Sentence (from "Juan Manuel Pérez de Guzmán, 8th Duke of Medina Sidonia"): Juan Manuel Pérez de Guzmán y Silva (7 January 1579 – 1636) was a Spanish noble and 8th Duke of Medina Sidonia.
Relevant evidence: Yes