Strafford was obliged to speak with deference and reserve towards his most inveterate enemies, the commons, the Scottish nation, and the Irish parliament.

He took only a very short time on each article to recollect himself: yet he alone, without assistance, mixing modesty and humility with firmness and vigor, made such a defence that the commons saw it impossible, by a legal prosecution, ever to obtain a sentence against him.
* Rush.

vol.iv.p *59, etc.
** Page 41.
But the death of Stafford was too important a stroke of party to be left unattempted by any expedient, however extraordinary.

Besides the great genius and authority of that minister, he had threatened some of the popular leaders with an impeachment; and, had he not himself been suddenly prevented by the impeachment of the commons, he had that very day, it was thought, charged Pym, Hambden, and others with treason, for having invited the Scots to invade England.

A bill of attainder was therefore brought into the lower house immediately after finishing these pleadings; and, preparatory to it, a new proof of the earl's guilt was produced, in order to remove such scruples as might be entertained with regard to a method of proceeding so unusual and irregular.
Sir Henry Vane, secretary, had taken some notes of a debate in council, after the dissolution of the last parliament; and being at a distance, he had sent the keys of his cabinet, as was pretended, to his son Sir Henry, in order to search for some papers which were necessary for completing a marriage settlement.