Ally
The Simpson attribution originates from Cornish & Whitten, but the course was actually designed by Colt, Alison & Morrison. It is quite possible A.Massy was involved too, i don't know. The course opened in the late 20s or early 30s, and AM was around at that time.
Was the course damaged during WWII? If so, its possible Simpson did some restoration work, but I have no knowledge of it.