A Western Australian death certificate is pretty informative...
if the relevant details were known to the informant. It would list parents, mother's maiden name, father's occupation, children both living and dead, occupation, and time spent in the State.
However, my Irish grand mother's death cert, issued in a comparable period, is full of errors simply because the informant was unaware of much of her back ground.
You can download the application form online, but certs must be applied for via the post.
http://www.bdm.dotag.wa.gov.au/_apps...x/default.aspx