This siege was a prelude Process_start to the Battle of Bannockburn .

After his victory at the Battle of Bannockburn , Robert decided Deciding to expand Expansion his war against the English by sending Sending an army under his younger brother Edward to invade Attack Ireland .

The murder Killing of Comyn in 1306 had set off Causation a bloody civil war for the throne of Scotland which King Robert had all but won at Bannockburn and was now attempting to finish Process_end by capturing Conquering their last remaining stronghold .

Robert the Bruce , after his victory at the Battle of Bannockburn , had led a raid into England , and went to Self_motion besiege Carlisle .