Jean McCullagh of Larne, who was thought to be the oldest living person in Northern Ireland, sadly passed away on 16 September 2022 aged 107 years, 291 days.
The oldest living person in Northern Ireland is now believed to be Agnes Thompson of Belfast (b. 2 September 1915).
Bernard O'Neill - of Ballygawley, Tyrone, Northern Ireland - died in August 1896 at the claimed age of 107.
This Ancestry profile was created for him, but I don't know how reliable the info is (supposedly, his mother lived to be c.111):
Profile picture: Marita Camacho Quirós (1911-Present)
N Ireland's second oldest person, May Armstrong, has died at 107 years 203 days -
https://finbarrconnolly.com/chronicle/