Looking through last Will and Testament documents are a good source of information on descendants, property and locations.
At some stage almost all Wills must pass through the Australia Court system and thus become an official court record to be stored in perpetuity. Where no Will has been left (intestate estates) usually next of kin apply for estate administration, documents of which also complement the official records. Many early Wills are now online in index of full document form. Also, this list has links to inquest documents and coroners reports.
Queensland Archives has compiled indexes of their archival records. Use these links to get to the page and search the index database by name.
Once you get to the Queensland Archives page, here's how to use it:
You may also be able to download the full index using a link that will appear on the top right of the page or below the search box (depending on what device you are using, eg: desktop, iPad etc).