found this family on 1851 census, think they belong to you.
parish of Boyndie, village of Whitehills BANFFSHIRE
sorry i cant make out the actual address, it looks something like Sew Street.
George Watson, head, 50, fisherman, b. Boyndie
Ann Watson, wife, 37, b. Boyndie
Henry (?), son, 22, fisherman, b. Boyndie
Margaret, dau, 18, <unable to read her occ>, b. Boyndie
Christian, dau, 14, scholar, b. Boyndie
Ann, dau, 12. scholar, b. Boyndie
Jane, dau, 9, scholar, b. Boyndie
James G, son, 7, scholar, b. Boyndie
Janet, dau, 5, scholar, b. Boyndie
Mary S, dau, 3, b. Boyndie
George D, son, 6 months, b. Boyndie.
this seems to fit the same details on IGI........
You searched for: Scotland, British Isles
Father: George Watson, Mother: Ann Downie
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International Genealogical Index / British Isles - 13
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1. JANET WATSON - International Genealogical Index
Gender: Female Birth: 14 OCT 1845
2. JANET WATSON - International Genealogical Index
Gender: Female Christening: 07 DEC 1845 Boyndie, Banff, Scotland
3. JANE WATSON - International Genealogical Index
Gender: Female Birth: 30 OCT 1841
4. JANE WATSON - International Genealogical Index
Gender: Female Christening: 05 DEC 1841 Boyndie, Banff, Scotland
5. ANN WATSON - International Genealogical Index
Gender: Female Birth: 10 FEB 1839
6. ANN WATSON - International Genealogical Index
Gender: Female Christening: 31 MAR 1839 Boyndie, Banff, Scotland
7. GEORGE DOWNIE WATSON - International Genealogical Index
Gender: Male Birth: 27 OCT 1850 Boyndie, Banff, Scotland
8. CHRISTIAN WATSON - International Genealogical Index
Gender: Female Birth: 28 DEC 1836
9. CHRISTIAN WATSON - International Genealogical Index
Gender: Female Christening: 13 JAN 1837 Boyndie, Banff, Scotland
10. MARY SMITH WATSON - International Genealogical Index
Gender: Female Birth: 20 MAR 1848
11. MARY SMITH WATSON - International Genealogical Index
Gender: Female Christening: 01 MAY 1848 Boyndie, Banff, Scotland
12. JAMES GEORGE WATSON - International Genealogical Index
Gender: Male Birth: 14 OCT 1843
13. JAMES GEORGE WATSON - International Genealogical Index
Gender: Male Christening: 17 NOV 1843 Boyndie, Banff, Scotland
Is it possible that George Watson was married twice, as Henry and Margaret would appear to be too old to be children of Anne Downie, being born long before the wedding .
There is a Henry Watson born 29 Nov 1828, at Boyndie to George Watson and Jane Watson
also
Margaret Watson born 9 July 1832 (christened 17 July 1832) at Boyndie, also to George Watson and Jane Watson.
there is a marraige between George Watson and Jane Watson 4 Nov 1827 at Boyndie, Banff
(seems to fit with the census ages of Henry and Margaret.)
source : IGI
hope this helps
gill