His problem was exercising too much power, so much so that he easily made enemies of powerful people. Moreover, the liberty with which he wielded authority—he was referred to as a "second king"—brought accusations against the king: that they were "too close." Hugh was accused of sodomy, a charge not even leveled at Piers Gaveston, of whom a modern age has no trouble assuming a homosexual relationship with Edward.
But Hugh had failed to do something that Gaveston had accomplished: treating Queen Isabella with respect. As chamberlain, he removed her children from her care, and mocked her for being French. As much as Edward's nobles may have hated the Despensers, the people also hated the influence on their king and the taxes promoted by his chamberlain. Some citizens of Coventry even hired a magician to kill the Despensers through sorcery.
Hugh was killed by ordinary means, however. Isabella partnered with Roger Mortimer to raise a force to rebel against her husband. Their assault on the king started in September 1326; in November, Edward and Hugh were captured. Edward was forced to abdicate in favor of his son, who became King Edward III.
Hugh was taken to Hereford. He began a hunger strike, perhaps hoping to die before what was liable to be a painful execution. On 24 November he had his trial in the market square in Hereford. He was charged with treason, of returning to England after banishment, of stealing (he had spent a part of his exile engaging in piracy), et cetera. The punishment for thievery was hanging; the punishment for treason was to be drawn and quartered.
He was stripped naked and dragged by horses to the walls of his own castle where a scaffold had been raised. There, in front of the populace as well as Isabella and Mortimer, he was hanged, drawn, and quartered. Jean Froissart, a French youth who came to Edward III's court, says Despenser's genitals were cut off and his entrails pulled out while he was still alive. Froissart was born after this event, however, and relies on an account by Jean le Bel, who was known for only relaying what he could learn by eyewitnesses. No contemporary English account mentions the castration, however.
Despenser's head was cut off and displayed in London. The rest of him was cut into four pieces and sent off display to Bristol, Dover, Newcastle, and York.
BBC History Magazine has labeled him the 14th century's worst Briton.
With the forced abdication of Edward II and elevation of his son Edward, Isabella was now mother to a 14-year-old king. She had proven herself to be able to take matters into her own hands and achieve bold results. Where did she come from, and what happened next for her? Let's take a close look at Isabella of France next time.