actually they may have been botjh
many (like my own families) went back and forth between Scotland and Ireland every few generation following the weather and fertile soil etc..
if their was famine in Scotland they went across the north end where it was only a short distance to Ireland 2 generations later the grandchildren came back..and so on..
My great grandfather William McClimont and his wife Anne Irvine were from Drumadonnel and Ballyroney, County Down, Ireland but in 1860 they stopped off to live in Dalry, Ayrshire near their McClymont and Irvine distant cousins for 5 years before they went to New Zealand..John worked in the iron mines in Ayrshire..
I also had Campbells in Ireland...William McClimonts mother was a Campbell born in County Down...Dromara...
I check the genealogy to make sure I wasn’t related (directly) to Obama.