The Other House (also referred to as the Upper House, House of Peers and House of Lords), established by the Lord Protector Oliver Cromwell under the terms of the Humble Petition and Advice, was one of the two chambers of the Parliaments that legislated for England and Wales, Scotland and Ireland, in 1658 and 1659, the final years of the Protectorate.
During the Rule of the Major-Generals and the selection of members for the Second Protectorate Parliament there was a firming of opinion that a second chamber was needed.
During the debate over the Humble Petition and Advice, the Lord Protector Oliver Cromwell and others wanted an upper chamber as a check on the power of the Lower House because he had found it difficult to control over the Naylor case. He pushed for a second chamber which would consist of nominated members who in Thurloe's words would be "a great security and a bulwark to the common interest". On 11 March 1656 the House of Commons passed a bill creating a second house which would consist of up to 70 members nominated by the Lord Protector.
On 6 May 1656 Cromwell rejected the title of King as proposed in the draft version of the Humble Petition, but accepted a reworded Humble Petition on 25 May. It included provisions for him as Lord Protector, tri-annual parliaments and an Other House of 40 to 70 members nominated for life by the Lord Protector, with a quorum of 21. Thus the second house became a fixture of the Protectorate cemented in place by the Humble Petition and Advice, a new written constitution.
The Judges of the Upper Bench, who at this time were Warburton and Newdigate; of the Common Bench, Atkins, Hale, and Wyndham; with Barons of the Exchequer, Nicholas, Parker and Hill, were summoned as assistants to the second chamber.