Following on from Tony's post, I took a walk down Winnington Road today looking for a house named 'Fairthwaite'. It's possible I may have missed it, but I didn't want to go snooping up to front doors to see small name plaques! However, I did check all the obvious stone gate posts and other larger names on the older houses, but no luck. A bit disappointing really. Some of the older properties no longer have the original gate posts, so it's possible the name has now been removed. I have a map of Marple from 1922 and Winnington Road is named, so IF this house was on Winnington Road in 1937 the address was certainly incomplete.
Any more info appreciated!