GBE met Dr Norris through the Drs responding to an ad for pups- looking for a started dog, which the Evans did not do. They kept up the correspondence any way and the Evans were eventually shooting guests several times at Dr Norris' club - Amwell, the Dr being elderly enough by then to have given up grouse. One of the smallest publications (by number of books) of GBE's books is "Recollections of a Shooting Guest" about the relationship, and a previously unpublished manuscript by Dr Norris
in his will, Dr Norris left GBE his choice of guns
He picked the Purdey - last I handled it, a few years ago- it was still in the Old Hemlock "family"
