The death of the marquis of Santa Cruz (9 February 1588) left the Spanish Armada leaderless. On 14 February, for reasons that have never seemed remotely satisfactory, Philip II named Don Alonso Perez de Guzman el Bueno, 7th duke of Medina Sidonia, to take his place. Medina Sidonia has been universally regarded rather like a rabbit pulled mystifyingly out of a hat by the king to the amazement of rabbit, spectators, and historians alike. Attempts to explain the appointment have been half-hearted and, until some recent revaluations of the duke's administrative abilities, have concentrated overwhelmingly on his character and social position. Portrayed as an amiable poltroon, loyal, unassuming, and characterless, utterly devoid of military experience but not too proud to be guided entirely by his expert advisers, he was just the man to do what he was told without questioning the instructions of the real admiral of the Armada in the Escorial, or cavilling at his subordination to the supreme commander of the invasion forces, the duke of Parma—issues which had already embittered relations between the king and the marquis of Santa Cruz. At the same time, personal jealousies among Santa Cruz's leading lieutenants, the refusal of the military to accept seamen on equal terms, and the presence in the Armada of a large number of titled and class-conscious gentlemen-adventurers all meant that the new commander had to be an outsider, a landsman, and a nobleman so illustrious that nobody need be ashamed to obey him or take precedence behind him. As the premier duke in Spain, Medina Sidonia's social qualifications were impeccable.1 Some historians have pointed to the duke's religious devoutness as a further recommendation, others have wondered whether his promotion were not a sentimental memento of an extinct romance between Philip and the duke's mother-in-law.