...the KEY link was the residence 16 Rowchester St Glasgow on David Jamieson marriage in 1874...
It was Joseph who married in 1874 and gave his address as 16 Rowchester Street.
Brother David married in 1889....as did twin Robert! Robert married an Ellen Mackin in Paisley. The family in 1891:
Robert Jamieson 25 Calenderman b. Ireland
Ellen Jamieson 23 b. Ireland
Joseph Jamieson 7 months b. Paisley
Address: 27 Gt Hamilton St, Paisley
Both baby Joseph and Ellen died in 1892. Ellen in Paisley and Joseph, aged 2, in Camlachie, Glasgow. At a guess, Ellen died first and Robert needed help looking after his toddler son, Joseph? Twin David was living at 3 Glenpark St, Glasgow/Camlachie in 1891 wasn't he.
Monica