 Bruce being generous to his supporters and after his victory the lands of Lamburgton were added to that of Kilmaurs in 1319 by royal charter.Sir William Cunningham of Kilmaurs was amongst the Scottish noblemen offered as a hostage to David II of Scotland's English captors in 1354.Sir William's eldest son, also named William, married Margaret, daughter of Sir Robert Denniston of that Ilk and acquired through her substantial lands including Glen Cairn and Finlayston in Renfrewshire.