Hi,
Wondered did you find anything more out about James Moore and Jane Girvin? According to Familysearch org his father was called Samuel and Jane's father was called Thomas.
My g g grandfather was a Samuel Moore from around that part of Co. Antrim (b 1851/2) and his father and mother were James and Jane. Samuel's children were born in Raloo, not far away. I know that 'my' James and Jane are buried at Raloo old churchyard (through links with the Bell family in the 1911 census)
Inscription: Erected by James Bell, Larne, in memory of his daughter Jane who died 7th March 1888, aged 10 months, and his son Thomas who died 4th August 1889, aged 2 months, also his mother in law Jane Moore, who died November 1885, aged 54 years, also her husband James Moore who died February 1907, aged 70 years.
If you have a definite link to James and Jane, it looks like your James born 1853 was a younger brother of Samuel. I know that Samuel was born in 1851/2 and when he married in 1875 he was a shoemaker as was James, his father. On the marriage record of James and Jane Girvin, James is a shoemaker, so I'm fairly certain it's the same family.
regards,
Pauline