Question: When did Juan Alfonso Pérez De Guzmán, 6Th Duke Of Medina Sidonia's father die?
Sentence (from "Juan Alfonso Pérez de Guzmán, 6th Duke of Medina Sidonia"): In 1518 he married his brother's wife, Ana de Aragón (d. 1528), daughter of Alonso de Aragón, and had issue:
As Don Juan Carlos predeceased his father in 1556, the title passed to his eldest son Alonso Pérez de Guzmán, 7th Duke of Medina Sidonia.
Relevant evidence: No