Interesting post, the duke of Sutherland's factor at the time of the "Highland Clearances" was a James Loch, his sidekick was the infamous Patrick Sellar, check Google.
Drylaw was home to the Loch's and a descendant of that family changed his name from Loch (small wonder) to Dalyell on inheriting the Binns estate. Tam Dalyell of The Binns, the Labour grandee, was a descendant.
Strange coincidence therefore to find a Loch/Sellar connection at this house in the 1930's?
Dennistoun was an old Glasgow family with a suburb named after them, possible connection?
Bests,
Skoosh.