Hugo O'Donnell, 7th Duke of Tetuan
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Hugo O'Donnell y Duque de Estrada, 7th Duke of Tetuán, GE, OM (born 29 September 1948), is a Spanish peer and historian who was the vice president of the International Commission for Maritime History, censor of the Real Academia de la Historia, and elected member of the Royal Historical Society.
In this Spanish name, the first or paternal surname is O'Donnell and the second or maternal family name is Duque de Estrada.