Yaay I found the link.. well hopefully. William Wenban (1826-1891) was son of William Wenban (b 1802 Hawkhurst and d 1878 Sydney NSW Aus) and Mary Anne Odiam (b Hawkhurst 1802 and died 1880 Sydney, NSW Aus).
Son in UK was speaking to woman from Home Office who suggested national archives. There is a website attached to archives where I found much info. I am very grateful to a woman from Canberra, ACT who appears to have done much research on the same line. If she reads this, many thanks!