Earlier quoted context omitted.
They would be wrong then. The great majority of unionist are of Scottish descent and have been in Norther Ireland from the 1600s. FYI the term "unionist" refers to those in NI who want the union with Britain to be maintained, not as someone looking in from outside would assume those who want a union with Southern Ireland. Those are "nationalists".
"Great majority"? See https://en.wikipedia.org/wiki/Politics_of_Northern_Ireland#V... . " ...have been in Norther Ireland from the 1600s. " Not that it matters to anyone, but the Plantation of Ulster would likely be considered a war crime under article 49 of the 4th Geneva Convention.
Well, probably not, given that none of the states who were, or whose territory was, involved were parties to Geneva Convention (IV) of 1949 at the time.