Stewart of Darnley Stewart of Darnley Stewart of Darnley was a notable Scots family, a branch of the Clan Stewart, who provided the English Stuart monarchs with their male-line Stuart descent, after the reunion of their branch with the royal Scottish branch, which led to the ultimate union of the two main kingdoms of Great Britain: England and Scotland. In 1565 the House of Stewart of Darnley was re-united with the Royal House of Stewart when Henry Stuart, Lord Darnley married his first cousin, Mary, Queen of Scots, both being grandchildren of Margaret Tudor, daughter of King Henry VII of England, and hence
Stewart of Darnley east of Barrhead, present day Darnley, within the city of Glasgow. In 1356, Robert Stewart, High Steward of Scotland granted the barony to Sir John Stewart. Like the Royal Stewarts, the Stewarts of Darnley used both the Stuart and the Stewart spelling of their surname. Sir John Stewart of Darnley (d.1429) fought in the Hundred Years' War under his namesake and distant cousin John Stewart, 2nd Earl of Buchan in the army of Charles VII of France. For his services he was rewarded with the lands of Aubigny-sur-Nere and Concressault which were given to the second son in the family