Northern Ireland national football team
In 1920, Ireland was partitioned into Northern Ireland and Southern Ireland. In 1922, Southern Ireland gained independence as the Irish Free State, later to become a republic under the name of Ireland. Amid these political upheavals, a rival football association, the Football Association of Ireland, emerged in Dublin in 1921 and organised a separate league and international team. In 1923, at a time when the home nations had withdrawn from FIFA, the FAI was recognised by FIFA as the governing body of the Irish Free State on the condition that it changed its name to the Football Association of the Irish Free State. The Irish FA continued to organise its national team on an all-Ireland basis.
Monarchy of Ireland
The British monarchy, specifically, continued and continues in Northern Ireland, which remains a part of the sovereign state that is the United Kingdom of Great Britain and Northern Ireland. From 1921 until 1973, the British monarch was officially represented in Northern Ireland by the Governor of Northern Ireland.The Wars of the Three Kingdoms (incorporating the Irish Rebellion of 1641, Confederate Ireland, the Cromwellian conquest of Ireland and the Irish Confederate Wars) took place between 1639 and 1651. Charles I was executed in 1649 and his son Charles II was recognised by some Irish lords as King of Ireland. The Interregnum began with England, Ireland, Scotland and Wales ruled by the Council of State, then the Lord Protector Oliver Cromwell (1649–58) and his son Richard Cromwell (1658–59). The Restoration in Ireland was effected in 1660 without major opposition, Charles II being declared King on 14 May 1660 by the Irish Convention.The position of King of Ireland was contested by William III and James II between 1689 and 1691, after the Glorious Revolution of 1688. The Crown and Parliament Recognition Act 1689 made William King of Ireland, and this was reinforced by his victory at the Battle of the Boyne (part of the Williamite War in Ireland).The Acts of Union 1800, instituted in reaction to the Irish Rebellion of 1798, created the United Kingdom of Great Britain and Ireland.Following the Ireland Act 1949, only that part of Ireland known as Northern Ireland remained part of a monarchy.The king's title in the Irish Free State, when it became a self-governing Dominion of the British Empire, and its constitutional successor from December 1936 to April 1949, was the same as elsewhere in the British Commonwealth, but it was unclear whether the President of Ireland was Irish head of state from 1936 to 1949 or the King, George VI.