hi pal,
wonder if this is of any help?
john married helen oliver 23/9/1870
1871 census- 3 harris lane, greenock
martin oliver...age 59...quay labourer...born belfast, ireland
john galbraith...son-in-law...age 28...carter
helen galbraith...age 19
mary...age 4 months
1881 census- 39 roxburgh street, greenock
john...age 31...carter
ellen...age 29
mary...age 10
margaret...age 8
1891 census- 9 tobago street, greenock
john...age 40...carter
ellen...age 39
margaret...age 18...knitter
ellen...age 8
christina...age 3
jane...age 1
1901 census- 9 tobago street, greenock
john...age 50...labourer
ellen...age 49
christina...age 13
jeanie...age 11 (assume this is jane)
Joe