From Sula's notes:
Photo dating from about 1934/5
John Anderson is top right - just in front of him his daughter Elizabeth Janet Forbes, aged about 15 / 16 - on her right is John's sister Janet Anderson(glasses), and on her right is John's other sister Margaret Eadie Anderson (QARANC in World War 1), on her right is a younger woman whose identity I don't know but I believe she died quite young - perhaps the daughter of Margaret Duff. At the back is John's Aunt, Margaret Duff (nee Anderson) the mother of John and Robert Duff (one of whom is probably taking the photograph).
After WW2 a 'New Town' was built at Cumbernauld as at others such as Milton Keynes, and Harlow in Essex, in the 1960s and it is possible that Ravenswood went under the concrete. The farmhouse was quite 'mansion like' as seen in another photo. I think the original village of Cumbernauld lies beside a nearby motorway.
John Anderson and his Aunt died within a few days of each other in 1942.
Neither Janet or Margaret married - a dearth of young men after WW1 ?
I believe Janet was house-keeper to a doctor and his family at St Leonards on Sea, Sussex.
The setting of the photo is Ravenswood Farm, Cumbernauld, near Stirling. The farm was run by the brothers John and Robert Duff, sons of Margaret. I think their father died quite early.