Side tracking ...
Margaret LARRYMORE arrived per the Duchess of Northumberland in 1835. She was 25.
Margaret LARRYMORE married John T YOUNG in 1836, as per Vol 73A, line 419. as per NSW BDM online and a record of that marriage is held within the Scots Church, Sydney's registers.
It may well be the marriage was celebrated at Scots Church, but it is also possible the Scots Church record is a transmitted record from anywhere within the then NSW territories ... Presbyterian Rev'ds on circuits would strive to transmit their baptisms, burials, weddings, back to their 'head office' in Sydney. (Add, so too all the clergy of all the various denominations)... That practice dates from a general order by Governor Lachlan Macquarie in 1810, and obeyed more by its breach than by rigid adherence until 1856 when civil registration commenced. So, not all marriages are found at NSW BDM, and when any are found, it is important to recognise that the actual indexing of those Early Church Records was not undertaken until the 1930s, and then it was under a team of volunteers striving to cope with the bound volumes that had not been bound until the 1910s... so a document from the 1830s may well have been thumbed through many times, ink bleeds, smudges etc.
JM