Freecen has the Divorty family living at Midmill in Kintore -Aberdeenshire in 1841.
Unfortunately as the ages were all rounded to within 5 years it doesn't give too much help narrowing the search, both parents ages are given as 55 years. It states everyone was born in Aberdeenshire.
William (Head) was a farmer. There is also an Isobel Divorty, the same age as George.
The 1851 census shows more data, and more children, family still living at Midmill. Isobell's place of birth is given as Echt Aberdeenshire. Maybe start looking around there for the marriage?
Hope this helps
Kirsty
Scottish Census Data - Crown Copyright © General Register Office for Scotland