The BVRI has these christenings for John Robson -
Christened 25 June 1836 All Saints Newcastle Upon Tyne, Northumberland parents John Robson and Eleanor
Christened 18 March 1840 Newcastle Upon Tyne, Northumberland parents John Parkinson Robson and Eleanor
Robert Robson christened 26 January 1828 Newcastle Upon Tyne, Northumberland parents John Robson and Eleanor
Douglas Robson christened 28 October 1835 All Saint Nicholas, Newcastle Upon Tyne parents John Robson and Eleanor
Thomas Angus Robson christened 17 April 1836 All Saints, Newcastle Upon Tyne parents John Parkinson Robson and Eleanor
There is also George 16 February 1838, Harriet 13 June 1847, and Joseph 13 June 1852 All Saints, Newcastle Upon Tyne parents John Parkinson Robson and Eleanor
William 22 February 1840 All Saint Nicholas, Newcastle Upon Tyne parents John Robson and Eleanor
Elizabeth 10 December 1854 All Saints, Newcastle Upon Tyne parents John Parkinson Robson and Eleanor
That's quite a jumble but was trying to figure out whether the John Parkinson Robson was yours or not, but I would believe that after Douglas, they moved and the "Parkinson" lot aren't yours. The William is possibly one of yours, who may have died young, although the different church makes me think twice about him.
If we assume that Robert is their oldest child, making Eleanor about 17 at the time of his birth, then unfortunately the BVRI doesn't list a marriage for them, sorry.
There is one on the IGI for John Robson and Ellen Caulkin 14 June 1828 Saint Andrew, Newcastle Upon Tyne, Northumberland but in view of the Armstrong URWIN that you found I think you are definitely looking for a Robson-Urwin marriage.