My Lovely Man was a London Irishman. His DF was from Kerry, and his DM was Irish, not sure where from. They were both Catholics but their marriage was disapproved of because of something to with Irish history that I haven't grasped.
Anyway, they came over in the war, there was (and still is) a family farm in Kerry, but it couldn't support all the offspring. So the lovely Dennis came over and earned his living as a painter and decorator. When they first came to London, of course they had trouble finding accommodation 
but ended up buying a house in NW London. LM told me that every year, his DF bought a load of toys - and then left his family in London to go to Kerry and deliver them.
I learned only basic English history at school in the 1960's - no real Irish history apart from a brief mention of the potato famine - and England's disgraceful response was complete news to me until about 2 decades ago when LM explained some Irish history.
LM and me moved away from London (me from S London!) to go to university. And here we stayed! Later in life his parents moved up to be near, and I am happy to report that his DF's baffling Kerry accent remained with him up to the end of his life 
During his youth, Lovely Man would go over in the summer to The Family Ranch, as he called it, and work on the farm.
We only got together late in life, and I went over to Ireland with him several times. I think he was a little sad that in Kerry his accent made him seem less of a Kerryman than he thought himself to be at heart. But at the same time, he was always a Londoner as well.
I don't know whether this will help you at all? Thankfully, the history of the English in Ireland is a lot more accessible than in my young day, and has TV programmes about it shown on British TV. My only advice would be to pass your history on to your DC.