Bernard Stewart, 4th Lord of Aubigny

Bernard Stewart, 3rd Lord of Aubigny (French: Bérault Stuart) (c. 1452 – 15 June 1508) was a French soldier, commander of the Garde Écossaise, and diplomat belonging to the Scottish family of Stewart of Darnley.

Bernard was the grandson of Sir John Stewart of Darnley, who was given the lands of Aubigny-sur-Nere and Concressault by Charles VII of France for his service during the Hundred Years' War. Like his father and grandfather he was high in favour with the French King and was chosen as commander of the royal bodyguard. Because of his family background he was chosen as the envoy to James III of Scotland to announce the accession of King Charles VIII of France. He was also given the task of signing a treaty with the Scots renewing the Auld Alliance which he proceeded to sign on 22 March 1484.

The Lord of Aubigny was also the medium of communication with the section of Scottish lords who favoured Henry Tudor, Earl of Richmond in his rebellion against his distant cousin King Richard III of England. Henry was still an exile living in France along with the chief supporters of the House of Lancaster, the experienced John de Vere, 13th Earl of Oxford and Henry's uncle Jasper Tudor, 1st Duke of Bedford. They relied heavily on the French king to finance the army and to be able to provide foot soldiers capable of fighting. In 1485 Bernard Stewart was chosen to command the French troops that accompanied the invasion and helped the Earl of Richmond become King Henry VII of England at the Battle of Bosworth Field establishing the Tudor Dynasty.

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