James Gairdner, 1911 Encyclopædia Britannica, Volume 16… (1911)
“ Five confederate lords with Gloucester at their head took up arms against the king’s favourite ministers, and the Wonderful Parliament put to death without remorse almost every agent of his former administration who had not fled the country. Gloucester even contemplated the dethronement of the king, but found that in this matter he could not rely on the support of his associates, one of whom was Henry, earl of Derby, the duke of Lancaster’s son. ”
