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"): His eldest daughter Luisa de Guzmán (1613–1666) became queen-consort of Portugal when her husband John II, 8th Duke of Braganza, became John IV, the first King of Portugal of the House of Braganza in 1640.
Relevant evidence: No