You can probably eliminate the Donald Robertson of Pitaldonich and Margaret Stewart of Kinardochy, Dull
Blair Atholl OPR, 1807
James, lawful son to Donald Robertson and Margaret Stewart, spouse, in Pitaldonuich, born 6th and baptised 8th March.
Dull OPR, 16th March 1820
Alexander, son to Donald Robertson and Margaret Stewart in Kinardochy was baptised.
1841 census for Foss, Dull.
Dwelling Name Age Occupation Birth-place
Donald Robertson 60y farmer Perthshire
Margaret Robertson 52y Perthshire
Christian Robertson 25y Perthshire
1851 census, Christian's mother was still living at Kinardochy, but she was a widow and had reverted to her maiden name.
Dwelling Name Relation Status Age Occupation Birth-place
Margaret Stewart Head widow 65y pauper Dull
Get back to us if contrary evidence emerges,