I think I might have found them on the 1881 Cencus.
Living at Gargowan Lodge, Kilmaronock, Dunbartonshire
Robert, Head of Household, age 35, born Killearn (Stirlingshire), occupation Gamekeeper died 11th January 1929 aged 86
Annie, Wife, age 30, born Glasgow (Lanarkshire) died 25th June 1910 age 59
Nelly, daughter, age 10, born Strathblane (Stirlingshire), Scholar (probably Helen)
Robert, son, age 9, born Strathblane (Stirlingshire), Scholar died 19th October 1895 age 23
Jessie (Janet), daughter, age 7, born Killearn (Stirlingshire), Scholar died (a spinster?) 25th February 1954 age 80
Annie, daughter, age 6, born Killearn Stirlingshire) * see below - this is another stone in Killearn Churchyard
Archibald (Norval), son, age 4, born Kilmaronock (Dunbartonshire) died 6th February 1941 aged 64
Walter, son, age 2, born Kilmaronock (Dunbartonshire)
James, son, age 1 month, born Kilmaronock (Dunbartonshire)
* In loving memory of ROBERT GILMOUR beloved husband of Annie B. Paul
Died 10th November 1941 aged 67 years
The above ANNIE B. PAUL died 18th May 1956 aged 81 years
Blue text - dates from gravestone
This Annie B. Paul might not be the correct one of course!!
If you 'google' Killearn and Kilmaronock, you'll see that although they're in different Counties, they're not really that far apart.
Anne