Not sure if you've seen the 1901 entry as you say you didn't know about the James Connelly:
11 Main Street, Greenock, Renfrewshire
James Boyle, widr, 36, general labourer, b. Old Monkland
Maggie, d, 4, b. Glasgow
William, s, 2, b. Greenock
Helen, d, 5 mths, b. do
James Monnachan, f in law, widr, 60, general labourer, b. Ireland
Mary Conelly, sister in law!, widow, 32, housekeeper, b. Old Monkland
James Connelly, nephew, 14, rivet boy - shipyard, b. Old Monkland