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):

Or maybe even older....

am generally very sceptical of these 19th century Irish claims; there were 514 centenarians reported in the 1901 census, five times the number in 1990.

N Ireland's second oldest person, May Armstrong, has died at 107 years 203 days -

https://www.ireland-live.ie/news/derry-now/1354436/derry-death-notices-wednesday-22nd-november-2023.html#textlink0#textlink0

This appears to be the oldest person in Northern Ireland, listed on Andrew's site, now deceased at 109yrs 10mths

https://www.ireland-live.ie/news/derry-now/1731123/derry-death-notices-monday-february-17-2025.html#textlink0#textlink0

RIP Rebecca (Ruby) Allen.

She was the 18th oldest living person in the UK, the 2nd oldest in Northern Ireland history, the 146th oldest person in UK history, she is the 5th oldest person born in 1914 to die to date
Agnes Thompson, from Belfast, born 2 Sept 1915 is the oldest living person in Northern Ireland now

Ms. Agnes Thompson of Belfast, Northern Ireland, UK, sadly passed away on 17 March 2025 at the age of 109.

She was born on 2 September 1915.

She was the 19th OLP of the United Kingdom.

https://oldestinbritain.nfshost.com/deaths.php

Posted by: @finbarrc

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Or maybe even older....

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am generally very sceptical of these 19th century Irish claims; there were 514 centenarians reported in the 1901 census, five times the number in 1990.

What's a huge shame is that Irish 19th century census records were overwhelmingly destroyed, so checking such claims becomes extraordinarily difficult. I have no doubt that most of them were fake, but I do wonder about the few that could have potentially been real. Not necessarily saying that this man's case was one of them, of course.

Mr. Norman Irwin turned 106 y.o. 

He might be the oldest living man in Northern Ireland.

https://longeviquest.com/2025/05/jane-benington-northern-irelands-oldest-resident-dies-at-108/

Jane Benington, Northern Ireland’s Oldest Resident, Dies at 108

Jane Benington, a resident of Belfast, Northern Ireland, passed away on 10 May, at the age of 108 years, 13 days. Her passing was reported by Funeral Times.

Benington was born on 27 April 1917 in Carland Manse, near Cookstown in County Tyrone, Northern Ireland. She was one of seven children of Reverend Joseph McCausland, a Presbyterian minister. Her family later moved to Kilmacrenan in County Donegal for a time, and then settled in Lisbellaw, County Fermanagh, where Jane attended Enniskillen Collegiate School.

Following her schooling, she enrolled in a catering college in Glasgow, but soon decided to pursue a career in nursing. She trained in Birmingham and later qualified as a midwife. Jane then spent a period working as a nurse in Malta before eventually returning home.

After retiring from the health service, she went to help out in a residential home. It was there that she met her husband, Arnold Bennington. Sadly, Arnold passed away just two years after they were married.

On 17 March 2025, following the passing of 109-year-old Agnes Thompson, she became the oldest living person in Northern Ireland.

According to the Oldest in Britain website, which tracks the nation’s oldest living residents, the oldest known living person in Northern Ireland is believed to be Margaret McMordie, born on 14 January 1918.

The featured image was sourced from Belfast Live

Jane is the 17th oldest person in Northern Ireland's history, her successor is the 31st, the oldest person born in Tyrone, and the 9th oldest person in history to die in Belfast.

RIP