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 held and once more the crown was placed on the brow of Robert Bruce, Earl of Carrick, Lord of Annandale, King of the Scots. In June 1306 Bruce was defeated at the Battle of Methven. His wife and daughters and other women of the party were sent to Kildrummy in August 1306 under the protection of Bruce's brother, Neil Bruce, and the Earl of Atholl and most of his remaining men. Bruce fled with a small following of his most faithful men, including Sir James Douglas and Gilbert Hay, Bruce's brothers Thomas, Alexander, and Edward, as well as Sir Neil