Hi Andrew
I have just seen your post. I have been researching Dunphys from Kilkenny. On his convict records your Martin Dunphy said he was born in London, native place Islington and he was a clerk. He said he was married with one child. His wifes name was Helen/Ellen Connell and she was living with her father who was also a clerk in the Barbican, London. There is a marriage for a Martin Dunphy to a Helen Connell on 10 Oct 1824 in St. Luke, Finsbury, London. In the 1841 English Census there is a Helen Dumphy living with a Martin Dumphy, he was aged 14 so would have been born about 1827. He later married a Clara Cripps and they are on the 1851 and 1861 Census. It was common for convicts to remarry in Australia. My own GGGGrandfather remarried, although he had left a pregnant wife and 1 child back in England. Hope this helps