Without getting into the politics of it - anyone born on the island of Ireland is automatically entitled to Republic of Ireland citizenship.
Duffy is a Catholic from Derry who grew up playing Gaelic football - Evans is a Protestsnt from East Belfast - in terms of the politics of Northern...
Nope -
Evans is a Northern Irish international
Duffy is from the Republic.
The only team the Republic fans want to beat more than the North are the English.