Hi
Could William maybe have died before 1861 and Christina remarried?
There is this family at Dalhalvag, Upper Strathahhalladle, Reay
William Douglas, 64, Lotter (?), b. Halkirk
Christina Douglas, 61, wife, b. Reay
Margaret McKay, 21, Stepdaughter, Serv. Oops, forgot to note where Margaret was born - will go back and look.
Cheers
Ellen.