Alonso P%C3%A9rez de Guzm%C3%A1n, 7th Duke of Medina Sidonia
Don Alonso Prez de Guzmn y de ZigaSotomayor, 7th Duke of Medina Sidonia , Grandee of Spain, a Knight of the Order of the Golden Fleece since 1581, was the commanderinchief of the Spanish Armada.
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Source: Wikipedia