Wonder if this could be the 1st husband Fortescue Murray? (father's name John)
https://familysearch.org/ark:/61903/1:1:V5C9-SJTHere's one the same age who went to N.Y. in Dec.1885- occupation labourer-
https://familysearch.org/ark:/61903/1:1:QVRS-GLMYToo earlier but perhaps a relative? Fortescue Murray of Wilmont Terrace, New Malone Road, Belfast, committed suicide June 1853.
Seems Mary Ann and Fortescue were separated by 1881-
Belfast Telegraph, 6 July 1881: Ligoniel Petty Sessions "A respectable man attended and made an information against his son-in-law, Fortescue Murray. He stated that Myrray had so misconducted himself, that his wife had been obliged to leave him and go to home to reside, Since then Murray was in the habit of coming to his house and causing a great deal of trouble and annoyance. ..." Article also mentions previous offense brought up in Lisburn Sessions and an arrest warrent was issued.
Belfast Weekly News, 15 Dec.1877: MURRAY-DUNCAN- December 10, at Christ Church, Belfast, by the Rev. Mr. Brandon, Fortescue Murray, Esq., sixth son of the late John Gregg Murray, to Mary Ann, eldest daughter of William Duncan, Esq., Balmoral, near Belfast., aged about 26, pleaded guilty... not less than three months' imprisonment, with such labour as was suited to her condition..."
Freeman's Journal, 6 Mar.1885: Mary Anne Murray, alias Brown, aged about 26, pleaded guilty... not less than three months' imprisonment, with such labour as was suited to her condition..."