Clan Sinclair to St Briavels Castle, and in 1296 he swore fealty to Edward I of England. In 1303 the Battle of Roslin took place where Scots under Henry Sinclair of Rosslyn and the Clan Comyn defeated an English force. The Battle of Loudoun Hill took place in 1307 where Scots under Robert the Bruce, assisted by Henry Sinclair of Rosslyn again defeated the English. The family initially favoured John Balliol's claim to the throne but later it became paramount that they gave their loyalty to Robert the Bruce. The Battle of Bannockburn was fought in 1314, where the Clan Sinclair fought
Robert the Bruce the River Tay. The following year, the clergy of Scotland recognised Bruce as king at a general council. The support given him by the church, in spite of his excommunication, was of great political importance. On 1 October 1310 Bruce wrote Edward II of England from Kildrum in Cumbernauld Parish in an unsuccessful attempt to establish peace between Scotland and England. Over the next three years, one English-held castle or outpost after another was captured and reduced: Linlithgow in 1310, Dumbarton in 1311, and Perth, by Bruce himself, in January 1312. Bruce also made raids into northern England and, landing