Hi Annejay
One more child showing for Robert and Helen, who could given the date of their marriage have been their first born son:
28/09/1788 JAMIESON WALTER ROBERT JAMIESON/HELEN TELFER FR649 M Dumbarton/DUNBARTON Refs: 496/ 0030 0048
Also, one more child showing born in Scotland to Janet Jamieson and John Sullivan:
JOHN SULLIVAN Christening: 26 AUG 1818 Port Glasgow, Renfrew, Scotland
Have a look at this site
www.scotlandsfamily.com/gazetteer.htm If you click on the map tabs on the l/h side for county and parish maps you will get your bearings!
Regards.
Monica