An etching by Hollar of the Trial in 1641. In the ensuing trial proceedings the Commons’ case was managed by a committee of eleven MPs, who were mostly trained lawyers, led by John Pym. Strafford conducted his own defence. From his accusers’ point of view it was difficult to attach the charge of treason to a man who had been acting on the King’s instructions. The case collapsed into confusion on the 10 April. The House of Commons then decided to proceed by a ‘bill of attainder’ which would simply declare Strafford’s guilt as proven. Amid fears that Strafford might prove a threat if he were to be spared, the Commons approved the bill on 21 April by 204 votes to 59. The King appealed to the House of Lords on 1 May to spare Strafford from execution and the following day sent an armed guard to the Tower in a futile attempt to free him. Unfortunately this gave credibility to rumours of an army plot to seize the Tower, release Strafford and force Parliament to dissolve. On 7 May the Lords passed the bill and finally on the tenth the King, intimidated by crowds outside Whitehall, gave the bill his royal assent. Strafford was beheaded on Tower Hill two days later much to the great satisfaction of London’s crowds.