There is a site called www.mundia.com.au. It is a free site but you will need to register. I found several norman hanna's born in various states (Queensland, Victoria, New south Wales and South Australia. It all depends on his middle name. There are four Norman Hanna's.The first has no middle name, the second's middle name is Alexander, the third is Leslie and the fourth is Cecil. The Victorian Hanna is not availabale as the manager of the site has made it private but5 all of the others list descendants. Good luck.