<<Not sure I'd ever say they owned Ireland, occupied maybe, but that could be my confused nationality talking.>>
Much like calling you lot mexicans, and my occassionaly use of phrases like the "yoke of oppression" or "British tyranny", I find the best way to discuss these things is to use the most inflammatory language possible. So they used to own all of Ireland, then they realised most of it was rubbish, so now they just own the good part at the top.
If no one else writes that Banshee comic, I'll add it to my ever growing list of dream projects. With my understanding of Irish history, culture and politics, I'm a shoe in. I'd propose a spin-off off movie, but the fuckers went and made Banshee a Yank. Between that and Magneto becoming Irish the moment he became an evil terrorist*, I'm convinced that Mr Vaughn has an anti-Irish agenda.
*Because clearly a German accent isn't evil enough.