I have also found a part of the Caithness 1851 census on line It says it is from A-Tools, however I was unable to go beyond to any other pages, it has Strays on the page that came up are 1851 Forsie, Caithness William MacKay, head, married age 68, farmer of 10 acres born Farr, Sutherlandshire Catherine MacKay his wife age 48 born Farr, Sutherlandshire Williamina MacKay, daughter , unmarried age 23, farm labourer born Caithness, Wick Mary MacKay, daughter age 14, farm labourer born Caithness , Wick Alexander MacKay, son age 12, farm labourer born Caithness, Wick Elizabeth MacKay, daughter , age 10 , Scholar born Caithness, Wick William MacKay, son age 8, Scholar born Caithness, Halkirk Hugh MacKay , son age 6 born Caithness, Halkirk Janet MacKay, Daughter age 4, born Caithness, Halkirk Hugh MacKay, Brother, age 58, farm labourer born Farr, Sutherlandshire ** further search on IGI on this couple reveals there is one Williamina born in 1828 in Wick to a William and Catherine MacKay Mary born June 22, 1836 in Wick to William and Catherine MacKay Alexander born June 22, 1838 to William and Catherine MacKay All three instances state the mothers name as MacKay, so I have to think that is probably her maiden name 1851 Caithness, Forsie William Manson, head , Married age 60, farmer of 10 acres born Caithness, Thurson Jane Manson, wife , age 58 born Farr, Sutherlandshire Andrew Manson, son, age 26 unmarried, farm labourer born Caithness, Thurso Janet Manson , daughter unmarried age 33, farm labourer born Caithness, Thurso Jane Manson, daughter age 24, scholar born Caithness, Thurso Sinclair Manson, daughter age 21, servant born Caithness, Halkirk George Manson, son age 19 , labourer at farm work born Caithness , Halkirk John Manson son age 15, farm servant born Caithness, Halkirk James Manson son age 14, scholar born Caithness, Halkirk Donald MacDonald, grandson age 4 , born Caithness Halkirk ** further investigation on the IGI reveals this couple to be William Manson and Jane Ross married April 23, 1824, in Caithness , Wick 1851 Caithness, Forsie Duncan MacDonald, head,age 50 married farmer of 4 acres born Farr, Sutherlandshire Elizabella his wife age 49 born Caithness, Halkirk Christina daughter age 14, farm labourer born Caithness , Halkirk Catherine daughter age 12, farm labourer born Caithness, Halkirk Murdoch, son age 10, farm labourer born Caithness, Halkirk Johanna, daughter age 8 born Caithness, Halkirk Neil, son age 4 born Caithness, Halkirk ** a birth search on Catherine revealed her parents to be Duncan MacDonald and Eliza MacPherson No marriage that seems to match these two show up the son Murdoch appears with same name of parents, no birth or christening comes up for the oldest child, Christina 1851 Caithness, Achater Benjamin MacDonald, head, married age 55 farmer of 30 acres employing 2 labourers born Caithness Wick Catherine his wife age 51 born Sutherland, Reay Dorothy, dau age 17, farm work born Caithness, Halkirk Barbara, dau age 15, farm work born Caithness, Halkirk William , son age 13, farm work born Caithness, Halkirk Catherine, dau age 9 born Caithness, Halkirk Donald , son age 7 born Caithness, Halkirk Benjamin , son age 2 born Caithness, Halkirk Angus Sinclair, servant age 20, farm servant, born Sutherland,Reay Annie Gunn, servant age 20, house servant , born Sutherland ,Reay Benjamin Campbell, visitor, married age 54, shoemaker born Caithness, Reay ** IGI search reveals a marriage between Benjamin MacDonald and Catherine Gunn in 1824 1851 Caithness , Achater Angus MacKay , head, married age 38, farmer of 4 acres born Sutherland, Reay Christina his wife age 48 born Caitness, Reay John son age 17, farm work born Caithness, Halkirk Donald , son age 15, scholar born Caithness, Halkirk Colin, son age 13, scholar born Caithness, Halkirk Jamesina, daughter age 4 born Caithness Halkirk * IGI search reveals that Colin died in May 30, 1916 birth search also reveals that parents names are Angus Mackay and Christina MacDonald ** is this the couple that married in Farr, Sutherland in 1823?? does anyone know 1851 Caithness, Forsie Elizabeth MacDonald, head widow , age 80, retired from Farm Labourer born Sutherland, Reay Janet, Daughter, unmarried age 38, farm Servant born Sutherland Reay Robert MacKay, son in law,age 38 married, farm labourer born Caithness, Halkirk Margaret MacKay, daughter, married age 34, labourers wife born Sutherland, Reay John MacKay, grandson age 4 born Caithness, Halkirk Hugh MacKay, grandson age 1.5 born Caithness, Halkirk ** IGI reveals no clear evidence of who these people are 1851 Caithness, Forsie Hugh Manson, head, married age 30, stone cutter born Caitness, Thurso Margaret Manson, wife age 35 born Sutherland , Kildonan Donald son age 5, scholar at home born Caithness, Halkirk ** IGI reveals a marriage between Hugh Manson and Margaret Sutherland, June 16, 1842 in Halkirk, Caithness 1851, Caithness, Forsie, end of the district of Forsie John MacKay, head age 63, married, Farmer of 100 acres employing 6 labourers, born Caithness, Halkirk Barbara his wife age 44 born Sutherland, Kildonan Adam Watson MacKay son, age16 born LKS, Glasgow Barbara , dau age 14, scholar born LKS, Glasgow Elizabeth , dau age 10 born RFW, Cathcart John, son age 7, scholar born RFW, Cathcart Catherine dau, age 5, scholar born Caithness, Halkirk James Allan MacKay age 3 born Caithness, Halkirk Alexander , son age 1 born Caithness, Halkirk Mary , daughter age .041, born Caithness Christian MacKay, sister unmarried age 47, farm servant born Caithness Neil Sutherland, servant unmarried age 21, farm servant born Caithness, Reay Colin Sutherland, servant, unmarried age 18, born Caithness, Reay Robert MacKay, servant unmarried age 16 , farm servant born Sutherland, Farr Janet MacBeath, servant unmarried age 24, house servant born LKS, Glasgow May Henderson, servant unmarried age 31, dairy maid born Caithness, Halkirk *** IGI search reveals thru Adam's birth record that the parents names are John MacKay and Barbara McLeod more to follow Cathy Wagner