Many thanks for your input, Monica.. and Sharon, and Pam.. I'm slowly gathering evidence
I have Robert Edgar's birth on 05.07.1849 from SP now (took a while to show up, though.. is it me?!), but I'm puzzled by date discrepancies:
In the 1871 census he's recorded as a boarder (and telegraph operator.. which seems to accord with his work in Cuba with the Cuba Submarine Telegraph Company) at 4 West Street, Bridgetown, Glasgow, aged 19 (i.e. born abt 1852). At his marriage to Maggie McKean in Annan on 15.04.1878 he's recorded as aged 26, again indicating birth abt 1852. Yet in the 1851 census he's there aged 1. In the 1861 census, however, the same family are at 10, High Street, Troqueer, Kirkudbrightshire (including Jane Crone, stepdaughter!) and Robert is recorded as 9 (i.e. birth abt 1852 again).. Is this common??
Robert Edgar's father, John, could well be he born 24.04.1820 at (Buckerhole?) Mouswald to James Edgar and Jean Dickson.. and it's tempting to continue to 'James, son to Joseph Edgar and Ann Burnet in Woodside (Mouswald) b. 08.03.1786, bapt. 09 of the same.'
But his mother, Jane Heughan/Houghan, recorded as Jean Edgar in the 1851 census, but missing in 1861, remains something of a mystery. In the 1841 census for Annan there's a Jane Heughan aged 40 at 'Closehead' (?), recorded as born in England ('E'?) as well as a Jane Heughan aged 90 who doesn't show up on the search but is the following entry in the record.. is this right?
Also, I'm not having much luck with death or burial records so far.. how good are these..?