His brother:
Name: BARWELL, PHILIP REGINALD
Initials: P R
Nationality: United Kingdom
Rank: Group Captain
Regiment/Service: Royal Air Force
Age: 35
Date of Death: 01/07/1942
Service No: 22062
Awards: D F C
Additional information: Son of Reginald and Alice Mary Ann Barwell; husband of Mary Elizabeth Barwell, of Peterborough, Northamptonshire, England.
Casualty Type: Commonwealth War Dead
Grave/Memorial Reference: 5. G. 1.
Cemetery: CALAIS CANADIAN WAR CEMETERY, LEUBRINGHEN
Spitfire AB806 shot down by Spitfires from Tangmere. There is a picture and a brief bio of both of them in their old school magazine
http://www.oldwellingburian.org/images/May03.pdf