In 1346, Edward Balliol, who had usurped the title "King of Scots" with the support of Edward III of England, declared Plenderleith forfeit to the crown as a result of Sir George's support for the Scottish king David II's invasion of England.
•
In addition to the 1306 charter erecting the barony, Crown Charters confirming the barony were issued by James II in 1464, Edward IV in 1483, James VI in 1613 and 1620, Charles I in 1635, and George II in 1755.