Greetings! I have heard of some Deterts in the state of Missouri, but unfortunately, they are not related to me. My family is primarily located in Minnesota, Montana and California, with a scattering around in Texas and a few other states. There are many Deterts also located in Wisconsin, to which I am not related. It is interesting about Australia, as somewhere I heard about Deterts being there - I just don't remember in what context, and if there is any possible relation. You may email me directly at firstname.lastname@example.org, as I don't check this website often, and it did not notify me when you replied to my posting.