As an Irishman myself, I assure you there is little understanding nor want of understanding about where or what remains of the Irish peerage in Ireland. Since 1922, and the realisation of the Irish Free State, and thereafter, there has been considerable destruction of the country houses of the gentry, titled and untitled; most are in the same as the Lord Kingsale who returns for holidays, and most are considered still with suspicion and distrust to a certain extent.
Here you will see demonstrated still a knowledge of Lord Lucan, his family; and one of the rare cases that groundrents are still owed to the family.
The same can be said of the Earls of Roden in Dundalk; Earls of Clancarty in Ballinasloe; etc. etc.
Of those the titled that still reside in the Republic of Ireland/Northern Ireland, there are few, though their recent descendants may still retain the old seat. Some are:
- The Duke of Abercorn still reigns supreme at Baronscourt, County Tyrone.
- The Marquesses of Sligo still lived in Westport House until 2014, when the title left for Australia.
- The previous Marquess Conyngham was and is still referred to as Lord Henry Mountcharles, his courtesy title...kind of. They still reside at Slane Castle, and Beauparc House.
- The Marquess of Donegall, resides at Dunbrody Park, County Wexford (having sold Dunbrody House).
- The Marquess of Waterford, resides at Curraghmore, County Waterford.
- Earl of Antrim at Glenarm Castle
- Earl of Mayo, lives not in Palmerstown House, but in a house in Galway.
- Earl of Roden, as above, lives not in Dundalk but in Galway.
- Earl of Rosse still lives in the family seat of Birr Castle, Co. Offaly.
- Earl of Meath is at Kilruddery House, Co. Wicklow.
- Baron Dunsany, still lives at Dunsany Castle, Co. Meath.
- Baron Rathdonnell still lives at Lisnavagh House, Co. Wicklow.
Gentry families and baronets still reside in Ireland to a certain extent, but I focused solely on those on the top of my head that reside still in Ireland.
I assure you most of the peers on the island had already left long before the Troubles broke out, and for some it was simply the end of the line. Many peers started leaving Ireland with the 1801 Act of Union, wherein they lost their seats in the independent parliament in Dublin. With this, they spent more time in Great Britain on other estates or to be closer to the parliament in London. After that the Wyndham Land Acts and the Irish Land Commission, which forced the sale of absentee landed estates, and after the War of Independence, and then the Civil War in the 1920s; it was often easier to sell up and leave to live in the UK, to where you were not considered outside of Irish society. Often, and still to this day, it doesn't matter that you have been in Ireland 400 years, your ancestors came over, and often excluded Irish Catholics from society, and so now that the shoe is on the other foot, they do the same. Anglo-Irish are made to feel more Anglo, than Irish, always.
The Troubles (1960s-1990s) rarely focused on the aristocracy, but some were indeed attacked, kidnapped (7th Earl of Donoughmore), or killed (Stronge Baronets); just like people on both sides of the conflict.