Rick
I think at least you might get another bite at the apple in terms of knowing who his parents were. I get the feeling from what I am seeing that Christina Fraser may have died before the 1861 census. There is this entry in 1871, indicating that perhaps John Raeburn may also have died before the 1871 census:
1871:
Elizabeth Coburn (Lawson) 27, head, lodginghouse keeper, b. Greenock Edinburgh
John Raeburn 18, step son, b. Huntly, Aberdeen
Robert Raeburn 16, step son, b. Huntly, Aberdeen
James Raeburn 14, step son, b. Huntly, Aberdeen
Alison Lawson 56, mother, , b. Greenock Edinburgh
John Geddes 31, l odger
John Jamisson 22, lodger
Michael Obrien 29, lodger
Address: 154 Cowcaddens St, Glasgow Barony
And a marriage:
JOHN RAEBURN Marriages:Spouse: ELIZABETH LAWSON
Marriage: 08 FEB 1865 Edinburgh Parish, Edinburgh, Midlothian, Scotland
Monica