Alonso de Guzmán y Sotomayor, 7th Duke of Medina Sidonia

Alonso Pérez de Guzmán y de Zúñiga-Sotomayor, 7th Duke of Medina Sidonia, GE, was a Spanish aristocrat who was most noted for his role as commander of the Spanish Armada that was to attack the south of England in 1588. He was a great-great grandson of Ferdinand II of Aragon.

10 September 1550

Born on the same birth day (10 September): Alice Brown Davis • Alison Bechdel • Arthur Compton • Ben Wallace (basketball) • Caleb Ralph • David Pountney • Don Wilson (kickboxer) • Eoin Morgan • Harry Treadaway • Jeppe Aakjær • Jordan Staal • Max Shachtman • Melanie Pullen • Mike DiBiase (born 1977) • Roy Ayers • Troy Terry • William Mason (New York politician)

Born in the same month (September 1550): Michael Maestlin • Pope Paul V