William,
I know that you have received offers to support you with your research, and i to an happy to do so.
I must comment that the source of data is fantastic , so well done Lecale Man.
I have had a quick look, and cannot connect to a Malcolm so would suggest that may not be his given name? Depending which 'foot' your family kick with, it it possible that he has a different name.
I would challenge the year of marriage, as i have traced a marriage that matches Malcolom & Bridget -
Name: Bridget Savage
Registration district: Downpatrick
Record type: MARRIAGES
Registration date - quarter and year: Oct - Dec 1894
Film number: 101257
Volume: 1
Page: 687
Name: Malcolom Smyth
Registration district: Downpatrick
Record type: MARRIAGES
Registration date - quarter and year: Oct - Dec 1894
Volume: 1
Page: 687
Collection: Ireland, Civil Registration Indexes 1845-1958
There is a Rosina Smyth, whom, if one accepts that the above dates, rather than 1896, then being 8 is a closer (not perfect) match
Name /Surname R'ship to Head Religion Read Write Age Gender Where born
Rosina Smyth Daughter RC R & W 8 F Co. Down
The father of Rosina is James! This may trigger something for you, or just a coincidence.
I'll keep digging
Slan go foill
Marc