After participating in the planned rebellion, Edmund became less popular at court. He was still allowed to accompany the king's wife Philippa to her coronation in February 1330, but his appearances at court became less frequent. At this point he became involved in another plot against the court, when he was convinced by rumours that his brother was still alive. It later emerged that Roger Mortimer himself was responsible for leading Edmund into this belief, in a form of entrapment. The plot was revealed, and in the parliament of March 1330 Edmund was indicted and condemned to death as a traitor. Upon hearing that the verdict was death, the condemned earl pleaded with Edward III for his life, offering to walk from Winchester to London with a rope around his neck as a sign of atonement. Edward III however knew that leniency was not an option for the aforementioned entrapment utilized by Mortimer could extend to him and potentially be subversive to his own kingship if his father, Edward II truly was alive. Thus Edward III sanctioned the killing of his uncle. It was almost impossible to find anyone willing to perform the execution of a man of royal blood, until a convicted murderer eventually beheaded Edmund in exchange for a pardon. Edmund's body was initially buried in a Franciscan church in Winchester, but it was removed to Westminster Abbey in 1331.