Alan Carr is the name of a series by Percy F. Westerman and it's principal fictional character. The character also appears in some of the authors other books.
A series of books by Dewey Lambdin following the adventures of Alan Lewrie, Royal Navy, from his days as a midshipmen to captain of his own ship and, though on somewhat dubious grounds, a baronetcy.
The saga of Francisco Albo. Albo piloted the sole ship of Magellan's fleet to circumnavigate the globe. He then returned to the Mediterranean to battle of forces of the Barbary Corsair Barbarossa and the Ottoman sultan.