"All-Ireland" is most frequently used to refer to sporting teams or events for the entire island, but also has related meanings in politics and religion.
As such, early international competition first featured the four constituent countries of the UK; England, Scotland, Wales and Ireland, before spreading to other parts of the Empire.
Other such sports include American football, basketball, boxing, cricket, curling, Gaelic games, golf, hockey, lawn bowls, korfball, Quidditch and rugby league.
Republican Sinn Féin hold an Eve of All Ireland Rally ahead of the senior All-Ireland Football Championship final on O'Connell Street, Dublin.
The term also refers to cross-border agencies established through agreements between the Republic of Ireland and the United Kingdom governments.