A Spaniard, born at Barcelona; travelled in the East; having acquired a knowledge of Arabic and Arab customs, disguised himself as a Mohammedan under the name of Ali-Bei; his disguise was so complete that he passed for a Mussulman, even in Mecca itself; is believed to be the first Christian admitted to the shrine of Mecca; after a time settled in Paris, and wrote an account of his travels (1766-1818).