As dissatisfaction with the Despensers grew Llywelyn's death united the native Welsh and marcher Lords. In 1321 a baronial revolt developed, the barons, led by the earl of Hereford, and others like Hugh D'Audley and Roger D'Amory, petitioned the king to dismiss Despenser, the murder of Llywelyn Bren was prominent in their list of complaints. When the King refused, an alliance of local Welsh men and Marcher Lords raided Despenser's lands in Glamorgan over some ten days. It may have been then that Lleucu and her sons were freed—certainly Hereford took all of Llywelyn's sons into his service around this point. Edward was forced to exile the Despensers for a time until he gathered enough forces to defeat the barons at the Battle of Boroughbridge in 1322 where the Earl of Hereford died.