Hi Lewy,
The following is from the 1881 Cencus:
Dwelling:   4 Albert Place
Census Place:   Aberdeen Old Machar, Aberdeen, Scotland
Source:   FHL Film 0203449     GRO Ref    Volume 168-2    EnumDist 28    Page 5
                   Marr   Age   Sex   Birthplace
Robert DAVIDSON   M   35    M   Rayne, Aberdeen, Scotland
   Rel:   Head
   Occ:   Commission Agent Wines & Spirits
Helen DAVIDSON   M   32    F   Elgin, Elgin, Scotland
   Rel:   Wife
Frederick C. DAVIDSON    9    M   Elgin, Elgin, Scotland
   Rel:   Son
   Occ:   Scholar
Constance H. DAVIDSON    8    F   England
   Rel:   Daur
   Occ:   Scholar
Kate G. DAVIDSON       3    F   Elgin, Elgin, Scotland
   Rel:   Daur
Elsie THOMSON   U   23    F   Fyvie, Aberdeen, Scotland
   Rel:   Serv
   Occ:   Genl Serv (Domes)
From this you can see where the family were at the time of the Cencus and names, ages and occupations of Kate's parents.
Hope this helps.
Anne