Since my last posting I have found Catherine was born around 1815 in possibly Middlesex, England, she came to Tasmania aboard the 'Charles Kerr' and had been considered troublesome according to shipping records.
Edward was a wheelwright or carpenter and they married in 1836 in Tasmania (Launceston).
Their children were: 1. Edward b 1837 2. Hannah (or Ellen Hannah or Ellen might have been another child) b 1842 3. Martha b 1844 4. Susan b 1846 5. Matilda b 1849 6. Adelaide b 1850 7. Catherine b 1852 d 1854 8. John b 1855 9. James Charles b 1858 10. Henry b 1860
I have traced Edward Jnr, Hannah, Martha, Susan, Matilda, Adelaide and Catherine but the three boys I can not find. Catherine (the mother) was vuried in a family grave in a now defunct cemetary in Tasmania.