Parliament of Southern Ireland was created in 1920.
Parliament of Ireland ended in 1801.
Parliament of Northern Ireland ended in 1973.
Down - Northern Ireland Parliament constituency - ended in 1929.
Mourne - Northern Ireland Parliament constituency - ended in 1973.
Iveagh - Northern Ireland Parliament constituency - ended in 1973.
Londonderry - Northern Ireland Parliament constituency - ended in 1929.
Enniskillen - Northern Ireland Parliament constituency - ended in 1973.
Bangor - Northern Ireland Parliament constituency - ended in 1973.
Larkfield - Northern Ireland Parliament constituency - ended in 1973.
Mid Down - Northern Ireland Parliament constituency - ended in 1973.
West Tyrone - Northern Ireland Parliament constituency - ended in 1973.