 In 1683 he was arrested for involvement in the Rye House Plot but escaped from the Tower of London in July and fled with Lady Henrietta and her new husband to France.He later became one of the leaders of the Monmouth Rebellion, landing with Monmouth at Lyme Regis in June 1685.He was in command of the cavalry, and its defeat on two occasions may have been caused by his cowardice, possibly even by his treachery.