Hello David and welcome to the Forum
Many thanks for the details. I was filling a branch of my tree. This is the connection:
The Sydney Morning Herald - Saturday 5 June 1943 p.16
MARRIAGES
CLEWETT - WALKER.- May 25, 1943, at St. Thomas' Church, North Sydney, by Canon H. N. Baker, Beth, youngest daughter of Mr. and Mrs. F. Sidney Walker of North Sydney, to Lieut. George V. F. Clewettt, (A.I.F.) only son of Mr. and Mrs. G. M. Clewett, of Highfields, Normanhurst.
Beth's mother and my grandmother were sisters.
Dave