Cumbria and Northumbria
Northumbria
Ulster has 9 counties. Only 6 of them are part of what is called Northern Ireland. In fact, the most northerly point of all of Ireland is in Ulster, but in one of the 3 counties that is not in Northern Ireland.
From the most northerly latitude (Scottish border) to the most southerly latitude (Channel) England is around 620km in length.
The province which forms the entire geographic north of Ireland is called Ulster. It has nine counties. There is also what is called Northern Ireland which is most but not all of the province of Ulster. It contains six of the counties of Ulster. The most northerly point on the island of Ireland is in Ulster but is not actually in Northern Ireland. It is in county Donegal, one the three Ulster counties that are in the Republic of Ireland and not in Northern Ireland.
Sami
Most of the Southern English counties have villages called 'Whitchurch', but there are not an English Parish called Whichchurch.
If you mean southern Ireland as a reference to the part of island of Ireland that is not Northern Ireland, then yes. The term "southern Ireland" is an incorrect and inaccurate reference to what is more commonly known as the Republic of Ireland. If you mean geographically, then the answer is no, as the most northerly point on the island of Ireland is Malin Head in county Donegal. County Donegal is in the Republic of Ireland, not Northern Ireland. See the map at the link below which shows the counties of the Republic of Ireland in green, and the counties of Northern Ireland in a tan colour. You will see that Donegal is in the Republic of Ireland, not Northern Ireland, and that it has the most northerly point on the island of Ireland.
Darwin is the most northerly of these cities.
The Island of Unst is the most northerly island on Britain.
Edmomton, Alberta, is Canada's most northerly capital
The most northerly part of the Irish province of Ulster is Malin Head in county Donegal. It is also the most northerly point on the island of Ireland.
Iqaluit, the capital city of Nunavut Territory, is the most northerly capital city in Canada. The most northerly provincial capital is Edmonton, Alberta.