Pym helped draft the Grand Remonstrance, presented to Charles on 1 December 1641; unrest culminated in 23 to 29 December with widespread riots in Westminster, led by the London apprentices. Suggestions Pym and other Parliamentary leaders helped organise these have not been proved, but as a result, bishops stopped attending the Lords. On 30 December, John Williams, Archbishop of York and eleven other bishops, signed a complaint, disputing the legality of any laws passed by the Lords during their exclusion. Viewed by the Commons as inviting Charles to dissolve Parliament, all twelve were imprisoned for treason.