Just following up the trail of Barry Martin Smith/Smyth who I think is related.
Northern Whig, 26th Jun 1845:
On the 21st inst., Mr. Barry Martin Smith, second son of John Smith, Esq., of Carrickfergus, was admitted an Attorney of the Court of Exchequer, and a member of the Honourable Society of King’s Inns.
I think this improves the chances that B. M. Smith may have been a grandson of your Barry Martin. Mr Smith/Smyth appears to have been based at Newtownards at this time
Belfast Newsletter, 4th May 1849:
On the 1st inst., at Ballyclare, by the Rev. John Hall, Barry Martin Smith, Esq., solicitor, to Mary Forsythe, third daughter of the late John Park, Esq., Ballynure.
Banner of Ulster, 16 Apr 1850:
On the 9th inst., at Newtownards, Mrs. Barry Martin Smyth, of a daughter.
By December 1850 Barry Martin Smith had moved, “…application to be made to BARRY MARTIN SMYTH, Solicitor, at his Offices, Ballyclare and Larne.”
In 1854 there was a “Case of Seduction” reported in the Banner of Ulster (21st March 1854). Barry Martin Smith, attorney, had two illegitimate children by a girl called Jane Kelly. Apparently he initially offered to marry her, but later offered her £20 to go to America. I’m not sure exactly of the order of things but the case ended up in court where Smith accused Jane Kelly of being a prostitute.
The judge was not at all convinced by this, cleared the girl, and he “regretted exceedingly that a gentleman in the situation of an attorney should be defendant in such an action, and still more, that he should seed, in order to get rid of a decree against him, to lay in a plea so unsustained in point of evidence, and involving so many groundless imputations against so many parties.”
Ah, here we go. From Rootsireland again:
Barry Marten Smyth – Baptised 29th Nov 1822 at Carrickfergus – Son of John Smyth and Ann Marten.
I’m guessing that’s probably Ann Martin, daughter of Barry, born c1795.