Montagu's brother Reginald was in exile at the time due to his opposition of Henry's divorce from Catherine of Aragon. They were committed to the Tower of London and Lord Montagu was attainted and his honours forfeited on 2 December 1538.
Reginald, Montagu's brother, was exiled because he opposed Henry VIII's divorce from Catherine of Aragon. Both were imprisoned in the Tower of London, and Lord Montagu was sentenced to death and stripped of his honors on December 2, 1538.