Further campaigns by Edward in 1300 and 1301 led to a truce between the Scots and the English in 1302. After another campaign in 1303/1304, Stirling Castle, the last major Scottish-held stronghold, fell to the English, and in February 1304, negotiations led to most of the remaining nobles paying homage to Edward and to the Scots all but surrendering. At this point, Robert Bruce and William Lamberton may have made a secret bond of alliance, aiming to place Bruce on the Scottish throne and continue the struggle. However, Lamberton came from a family associated with the Balliol-Comyn faction and his ultimate allegiances are unknown.