 Once confronted with the royal army, Mortimer surrendered without a fight, and attention turned to the leader of the baronial opposition, Thomas of Lancaster.Edmund, who had taken part in the Marcher campaign, was now ordered, with the Earl of Surrey, to take Lancaster's castle of Pontefract.On 17 March 1322, Lancaster was captured after his defeat at the Battle of Boroughbridge, and brought to Pontefract.