Sir Gervas Walker, 1920-2001 (General)
Percival H Walker was indeed his Brother and all the other info re; Sir Gervas walker's family is correct.
His Father Harry was also a local preacher in the 2 congregational chapels, (1 in St Briavels and 1 on St Briavels Common. Both are still there. I am not sure whether they carried out baptisms, certainly not in the time I was attending the Sunday School in 1950's.