The Oxford Parliament, also known as the Mongrel Parliament, was the Parliament assembled by Charles I of England for the first time on 22 January 1644 and adjourned for the last time on 10 March 1645, with the purpose of being an instrument of the Royalist war campaign.
Charles was advised by Edward Hyde and others not to dissolve the Long Parliament as this would violate the statute of 1641 which said that Parliament could not be dissolved without its own consent. So all members of the Long Parliament were summoned by King Charles to assemble for a session of Parliament to be held at Christ Church Hall, Oxford. Eighty-two peers, which was most of the House of Lords, and 175 commoners, which was about one-third of the House of Commons, heeded the summons and came. Sir Sampson Eure was elected as Speaker of the House of Commons.