On 20 October 1399, he was imprisoned at Windsor Castle, and on 3 November deprived of the dukedom of Aumale, but not his other titles.
Pada tanggal 20 Oktober 1399 ia dipenjarakan di Windsor Castle, dan pada tanggal 3 November dicabut keadipatian Aumale, namun gelar-gelar lainnya tetap tinggal.