Thanks Val.
The Sydney Morning Herald - Monday 11 June 1956 p.16
DEATHS
CARTER Thomas Alexander.-June 9, 1956, at his residence, Hilda Road, Baulkham Hills, dearly loved husband of Mona Marie Kathleen Carter, ... aged 75 years. At rest. Tumut papers please copy.
Marriage 8625/1921 CARTER THOMAS H - PALMER MONA M K - GRANVILLE
I have the date as 4 April but have not found any notice in TROVE yet.
Dave