Lord Protector or otherwise unable to rule. Notable cases in England are: and in Scotland: The Lord Protector of the Commonwealth of England, Scotland and Ireland was the title of the head of state during the Commonwealth (or, to monarchists, the Interregnum), following the first period when a Council of State held executive power. The title was held by Oliver Cromwell (December 1653 – September 1658) and subsequently his son and designated successor Richard Cromwell (September 1658 – May 1659) during what is now known as The Protectorate. The 1653 Instrument of Government (republican constitution) stated that— Oliver Cromwell, Captain-General of the
Lord Lieutenant of Ireland to join the two; a Council of Ireland (which was hoped would evolve into a working all-Ireland parliament) and the Lord Lieutenant who would be the nominal chief executive of both regimes, appointing both prime ministers and dissolving both parliaments. In fact only Northern Ireland functioned, with Southern Ireland being quickly replaced by the Irish Free State. The powers meant to have been possessed by the Lord Lieutenant were delegated by amendment to a new Governor of Northern Ireland, while the role of representative of the Crown in the Free State went to a new Governor-General of the Irish Free