In reply to coldfell:
My grandmother left Dublin after meeting my grandfather who was in the British army in Dublin after WW1 (not in the Black and Tans, I hasten to add!) She returned to England with him, and like you it's been onwards and upwards since.
I'm also extremely grateful to said grandmother (who in all honesty wasn't a favourite of the family!) for enabling me to claim my Irish citizenship and the passport of an EU country