Hmm, I love a challenge. I think it is a strange coincidence that
Kemball-Cooke (Head of QEGS Blackburn) knew
Dean Bernard Walmsley (a governor at QEGS Blackburn dating to prior to BH K-C becoming head) who usedHartley
Wood & Co to produce his glass.
It appears from this link that he made several stained glass windows for Blackburn Grammar School in 1926https://www.the-saleroom.com/en-gb/auction-catalogues/lyon-and-turnbull/catalogue-id-srly10050/lot-cacfe919-8015-49ac-9c07-a448003b6bae
'Blackburn Grammar School, Lancs [seven windows, ca 1926]'
There could well be a link somewhere. Brian Hartley Kemball-Cooke may well have been a son of a female member of the Hartley family hence being given the name as a middle name. (My middle name is a surname as well
and was my grandmother's family name)
Some more information will come to light I am sure.
Here is a link to the Hartley Wood factory and some information from someone who says his father was stained glass artist and bought his glass from Hartley Wood (presumably not Dean Walmsley as it looks from the account that he picked up glass in 1989 and Dean Walmsley had died in 1985 aged 92), but interesting photographs.https://www.28dayslater.co.uk/hartley-wood-glass-sunderland-1989.t77102
More information on the History of Hartley Wood herehttp://discovery.nationalarchives.gov.uk/details/r/7b8fca6b-a110-43c9-9447-543b4eaad1f8#0
(Not sure if there will end up being a link but just in case, Brian Hartley Kemball-Cook may have had three brothers, if this is the same Brian mentioned, who may have been Denis, Richard and Barry according to this obituary for Denis:http://www.nytimes.com/1986/02/02/obituaries/denis-kemball-cook-former-shell-oil-chief.html
)'walmsley bernard dean (1893-1985)
born in blackburn.......son of Luke walmsley himself a fine art dealer.1st opened a stained glass studio in lytham st annes in i think 1922 until 1929 until he moved with his wife to Chapel Stile in Langdale where they opened a new studio designing stained glass windows and vases and plaques all which (vases and plaques) were made at and by Hartley Wood and co Sunderland.............ref the arts and crafts movement in the northwest of england........'