 This situation led to frustration among the English nobility . In addition to the Scottish issue , there was also discontent with the king 's treatment of his favourite , Piers Gaveston . Gaveston 's promotion from relative obscurity to Earl of Cornwall , combined with his arrogant behaviour , caused resentment among the established nobility . Gloucester was initially not hostile to Gaveston , who had married Gloucester 's sister Margaret in October 1307 . He did , however , share in the other earls ' frustration with Edward 's lack of initiative towards Scotland . In 1308 , therefore , Gloucester was among the earls who demanded Gaveston 's exile , a demand the king was forced to meet . After this , he seems to have been reconciled with the king , and in 1309 he acted as a mediator when the earls agreed to Gaveston 's return . Relations between the king and the nobility deteriorated even further , however , after Gaveston 's return . In 1310 , a group of so @-@ called Lords Ordainers were appointed to draft the Ordinances of 1311 , a set of restrictions on the rule of Edward II , including a renewed exile for Gaveston . Gloucester , who was still a supporter of the king , was not initially among the Ordainers , but was appointed on 4 March 1311 , upon the death of the Earl of Lincoln . 
