hi there i dont have the census info you require, but does any of the following help.....
(hopefully this is the correct family of course ages are slightly out in the 3 youngest in 1881).
ALEXR. WOOD
Spouse: MARY PIRIE
Marriage: 27 MAY 1865 Seafield, Banff, Scotland
ISABELLA ANN WOOD
Female
Birth: 13 MAR 1866 Drainie, Moray, Scotland
Father: ALEXANDER WOOD
Mother: MARY PIRIE
WILLIAM WOOD
Male
Birth: 18 JUL 1868 Drainie, Moray, Scotland
Father: ALEXANDER WOOD
Mother: MARY PIRIE
JAMES WOOD
Male
Birth: 19 MAY 1871 Drainie, Moray, Scotland
Father: ALEXANDER WOOD
Mother: MARY PIRIE
ALEXANDER WOOD
Male
Birth: 29 AUG 1873 Drainie, Moray, Scotland
Father: ALEXANDER WOOD
Mother: MARY PIRIE
also same registered at fraserburgh
ALEXANDER WOOD
Male
Birth: 29 AUG 1873 Fraserburgh, Aberdeen, Scotland
Father: ALEXANDER WOOD
Mother: MARY PIRIE
Surname: WOOD
Forename(s): ALEXANDER
Date of Birth: c. 1840
Spouses Name: MARY PIRIE
Marriage Narrative: PARENTS OF ISABELLA ANN & ALEXANDER WOOD
Date of Death: 26 SEP 1900
Age: 60
Headstone Ref: Ki243
Surname: WOOD
Forename(s): MARY
Maiden Name: PIRIE
Date of Birth: c. 1841
Spouses Name: ALEXANDER WOOD
Marriage Narrative: PARENTS OF ISABELLA ANN & ALEXANDER WOOD
Date of Death: 22 AUG 1916
Age: 75
Headstone Ref: Ki243
Surname: SLESSOR
Forename(s): ISABELLA ANN
Maiden Name: WOOD
Date of Birth: c. 1866
Father's Name: ALEXANDER WOOD BOATBUILDER
Mother's Name: MARY PIRIE
Biography: SISTER OF ALEXANDER WOOD
Spouses Name: HENRY SLESSER BOAT CARPENTER
Date of Marriage: 13 NOV 1891
Place of Marriage: 2 HIGH STREET BRANDERBURGH
Date of Death: 14 OCT 1900
Age: 34
Headstone Ref: Ki243
Newspaper Articles
Northern Scot marriage 21/11/1891 1/1
Surname: SLESSOR
Forename(s): HENRY
Occupation: BOAT CARPENTER
Date of Birth: c. 1860
Spouses Name: ISABELLA WOOD
Date of Marriage: 13 NOV 1891
Place of Marriage: 2 HIGH STREET BRANDERBURGH
Date of Death: 27 JUL 1904
Age: 44
Place of Death: LOSSIEMOUTH
Newspaper Articles
Northern Scot marriage 21/11/1891 1/1
Northern Scot death 30/07/1904 8/5
sorry, couldnt find anything on any of the boys
kind regards,
Lorna.