This collection of caches has nothing to do with the Church Micro series in the UK. Given that the Australian 2016 census indicates that No Religion and Jedi Knight are the fastest increasing classifications of the optional religion question "What is the person's religion?" it is not surprising that there is surfeit of empty churches that have been repurposed.
A little history
Undalya St Patrick's Catholic Church
Built with a grant and land from a local farmer the Roman Catholic Church of St Patrick was built by the Jesiut fathers of Sevenhill just south of Undalya village. The church closed in 1915 and later demolished, take the time to look around this old historic cemetery.
To find the cache
At starting coordinates you will see a plaque let the year opened = ABCD and the year demolished = EFGH
S34 04.HE(A-E) E138 41.H(D+E)C
CHECKSUM = 22
Happy hunting