Ian McDiarmid, who played Palpatine/Darth Sidious in Star Wars, is definitely Scottish. Ian McKellen and Malcolm McDowell, though born in England, have ancestry going back to Scotland.
That’s why I used the phrase, more likely, instead of the word, all. Here are lists of the most common surnames for each.
https://www.independent.ie/irish-news/revealed-top-20-irish-surnames-31414892.html
https://en.wikipedia.org/wiki/Scottish_surnames#Most_common_surnames
More facts...
Ireland
CIA World Factbook
https://www.cia.gov/library/publications/the-world-factbook/geos/ei.html
“Religions:
Roman Catholic 78.3%, Church of Ireland 2.7%, other Christian 1.6%, Orthodox 1.3%, Muslim 1.3%, other 2.4%, none 9.8%, unspecified 2.6% (2016 est.)”
Scottish Government
ANALYSIS OF RELIGION IN THE 2001 CENSUS: Summary Report
http://www.gov.scot/Publications/2005/02/20757/53570
“Church of Scotland [The Kirk, also known as Presbyterian, one of the Protestant churches.]
42.40[%]
Roman Catholic
15.88[%]
Other Christian [Other Protestant, mostly.]
6.81[%]”
I see the mods just blocked my ability to send private mail.