There are strong indications that Richard McGreevey's wife was Sarah McGraw / McGrath and that he had a sister Ann Jane McGreevey.
The St. Malachy's church record version of the previously mentioned marriage of James Feenan and Sarah McGreevy on 22 July 1885 identified both parents of the bride, namely Richard and
Sarah McGreevey of 25 Ship Street.
Then this from the Irish News and Belfast Morning Post of 29 October 1894:
FEENAN-October 27, at the residence of her father (Captain Richard McGreevy), 25 Ship Street, Sarah Ellen, the dearly beloved wife of James Feenan.- R.I.P. [Her remains will be removed from above address for interment in Greencastle Roman Catholic burying-ground, this day (Monday), 29th inst., at one o'clock. Friends will please accept this intimation. English, American and Australian papers please copy.]When I checked Greencastle RC Graveyard inscriptions, I found this:
Erected by Richard McGreevy, in memory of his beloved wife Sarah McGreevy, who departed this life 4th August 1864, aged 37 years, also John McGreey [sic], who died 31st October 1909, and John McGreevy, who died 12th September 1963, also his wife Mary, who died 14th September 1963, RIPSarah McGreavey's 1864 civil death record shows that she died at 42 Pilot Street Belfast and identified her as the wife of Richard McGreavey (branch pilot), the informant was her 'sister-in-law' Ann Jane Madden of 17 Trafalgar Street Belfast. Note that an Ann Jane 'McGreary' (McGreavy?) married Michael Madden on 13 July 1847 in St. Patrick's RC Church Belfast.
A
Sarah Ellen McGreavey was baptised on 25 August 1861 in St. Patrick's RC Church Belfast for parents Richard McGreavey and Sarah McGraw (right page, 5 lines up from bottom):
https://registers.nli.ie/registers/vtls000633210#page/190/mode/1upFor same named parents, the St. Patrick's register also shows a son John baptised on 2 February 1850 (right page, 17 lines down from top):
https://registers.nli.ie/registers/vtls000633209#page/175/mode/1upThere are also St. Patrick's baptisms for Sarah (1854) and Isabella (1860) listed under Richard McGreevy and Sarah
McGrath (phonetically very similar if not identical). And a marriage in St. Patrick's for Richard McGreavy and Sarah McGrath on 4 May 1845.