Haha sorry, I'm probably being too smart for my own good!Ok that’s gone over my head hereas in theirs bad parts and good parts? Still doesn’t explain her D4 accent though?
West cork has a various threads to its population, like anywhere. My (incomplete) summary is below
(Group A) There are a lot of people whose heritage predates the first wave of European and English settlers in the 1970s (the original blow-ins). This cohort of people will generally have the standard west cork accent - think the O'Donovan brothers.
(Group B) The next cohort worth discussing are the "Calves Week" set. These generally are people from the environs of Cork City (who keep their yachts in Crosshaven) or Kinsale ,but decamp to Schull and Baltimore during the summer. They will often have a holiday home. For them the sailing regatta known as "Calves Week" in the first week of August is the sine qua non. In due course, some of this cohort will of course settle in the area. Their accents are Cork too, but distinguishable from the local accent - think Reggie from the Blackroad Road.
(Group C) First-wave blow ins. This group started landing in the 1970s and 80s when west cork was a wild and remote place. The first episode of the West Cork podcast (one of the many productions about the Sophie murder) is brilliant on this, it details what drew people to the area back then.
Property was cheap as chips because the country was on its knees financially and the area hadn't been discovered. This group are really responsible for kick starting the artistic and culinary revival that has been integral to the modern identity of the area. You have this cohort to thank for the original Irish farmhouse cheeses such as Mileens and Durrus. Accent - English or German, but with an Irish inflection. Most people you would have heard interviewed on any of the Sophie documentaries came from this cohort
(Group D) Second wave blow-ins . Celtic tiger to present day. The only qualification here is to have enough money to be able to buy property in the area. A subset of this is "famous blow-ins" Most notable of these would be Jeremy Irons ,Saoirse Ronan, Paul Mescal, the novelists Hilary Mantel and David Mitchel, film producer David Puttnam et al , who all have houses in the region.
I would propose the theory that the region is known as West Cork for groups B,C,D.
You might wonder which group our dame Triona comes from. I'm only speculating here because I don't know personally. Her surname would leave you to believe that she comes from group A. Like any social cohort, you will have some people who become upwardly mobile (aka getting notions), perhaps due to going to a fee paying school. That would explain the accent. However, she could also be second-generation Group B.
Another interesting case study of the area is the TD Holly Cairns. Born and reared in the area but sounds like she was Ross O'Carroll Kelly's girlfriend. I heard interviews with her parents and they are tough to place. Gun to my head, I would guess her dad is Group B and mother is Group C.
A subset of Group A, that I'm not really au fait enough with is the Protestant landowning class. This can span from hardworking strong farmers to anglo Irish gentry.
You could do a PhD on this topic i think !