Hello cp,
Thanks for looking.
Some things don't add up.

Albury and date could be errors.
Marriage # 2672/1881 TAPP CHARLES PALMER CATHERINE S ALBURY
Birth # 20372/1881 TAPP FRANK PALMER CHARLES CATHERINE SARAH MOLONG
It's possible he died in 1880 but Palmer, SA ?? Dubious.
The Sydney Morning Herald - Tuesday 29 January 1918
DEATHS
TAPP.-January 24, 1918 at Ryde, Catherine Sarah, wife of Charles Tapp, formerly of Cudal, at the age of 64 years.
I read that to mean Charles is still alive.
Death # 7540/1921 TAPP CHARLES F
FRANK P EDITH R WINDSOR ??
Birth V18552866 56/1855 TAPP CHARLES
FRANK MARY A
If they married in 1877 then I can only see the one birth in 1881.
Cudal/ Molong / Orange all together. Albury makes no sense. It's not the only Albury one I have that seemed out of place.
Regards,
Dave