The First Two maps show Scotstoun House south of Dumbarton Road but the 1899 map shows a House north of Dumbarton Road which I believe became the Children's Home. The later maps show this home as "Scotstoun House" I used to have a map which showed a Children's Home where the Kingsaway flats are now. I have tried googling but there was an orphanage next to the park and I think that's hampering the search.
Just checked "Both Sides of the Burn" and it does mention Scotstoun Estate within Chapter 4 The Landed Gentry for anyone fortunate enough to have a copy
Text from the book is hown in black text below my comments are in red text
Page 39 para 3
In 1691 the estate was acquired by William Walkinshaw who greatly improved the place, He demolished the original Scotstoun House which stood on a site now the property of the Albion Motor Car Company (presumably somewhere between the river bank and south of Dumbarton road) and built a handsome new one on higher ground now occupied by the Kingsway high flats.
Until well into this century (1900s) the lodge of the original house stood at a point on Dumbarton Road near the present Duchall Place. The lodge of the new house stood some 100 yards west of this but on the north side of Dumbarton Road at the foot of Larchfield Place.
Page 39 Para 8
The house and lands were purchased in 1825 by yet another relative Lady Oswald whose family fortune had come from the Tobacco Trade. She did not like the austere frontage of the house and had it all torn down that same year and a new front more to liking substituted. This was the Scotstoun House known to the older residents of Scotstoun and Yoker.
The house finished it's days as a day nursery for toddlers and was demolished to make way for the present block of flats (early 60s??)
The Factors of Scotstoun Estate were well aware of it's value for housing development towards the end of the 1890s, and a company was formed "Scotstoun Estate Building Company" to plan and build the terrace houses which occupy a vast expanse of land between Lime Street and Queen Victoria Drive. In 1912 a claim was put on record in the Transactions of the Old Glasgow Society that "Scotstoun is the finest garden city in Glasgow."