Thank you for all the replies you have sent. I have quite a lot of information about them. John and Margaret Devine arrived on Pemberton on 14 May 1849. Children - John born 1849, Catherine (Kate) 1852 and Mary 1855 - also a male and a female deceased. Margaret died on 25 August 1858 and John remarried in 1861 - Johanna Coughlan. John Jnr married Mary Somers on 7 August 1872 - their daughter Regertha Mary (Gertie) Devine born 4 June 1888 was my grandmother. John Devine Snr died on 26 September 1878.
Example of families interwoven - Mary Somers mother was Bridget Burke born in 1831, married John Somers in 1851, Mary was born in 1852. John Somers died in 1852. Five years later in 1857, Bridget Somers married Michael Coughlan, brother of Johanna Coughlan. So Mary Somers step aunt was her step mother in law as well.
Some sad information regarding this family - Kate Devine married James Hutchinson, had eight children - during an outbreak of diptheria in 1894, they lost five of their children in a couple of weeks. Also their cousin, Ellen Devine, the sister of my grandmother.