Lord Protector of the Commonwealth of England, Scotland and Ireland

Lord Protector of the Commonwealth of England, Scotland and Ireland was a title given to the rulers during the Great Interregnum from 1649-1659 after the execution of Charles I and the installation of Oliver Cromwell. There were 2 lord protectors, Oliver and his son Richard who ruled as lord protector for under a year (1658-1659)
Following Richard Cromwell's resignation of May 25th 1659 he was succeeded by the Council of State who ruled the country until May 28th 1660 when king Charles II took back power and was restored as the monarch of England, Scotland and Ireland.