a Scottish sailor from Leith, who served as High Admiral of the Kingdom of Scotland. Andrew became notorious in England and Portugal as a 'pirate', though as a seaman who operated under the aegis of a letter of marque on behalf of the Scottish crown, he may be described as a privateer. The letter of marque against Portuguese shipping was originally granted to his father John Barton by James III of Scotland before 1485. John's ships had been attacked by Portuguese vessels when he was trading at Sluis in Flanders.
