Trina
I use a number of sources to track trees - besides Ancestry.com. I have listed some links that might help you.
http://www.bdm.nsw.gov.au/familyHistory/searchHistoricalReco...http://trove.nla.gov.au/ndp/del/search?adv=yhttp://austcemindex.com/inscriptions.phphttp://ryersonindex.net/search.phpI have not been able to find any information on any of the remaining siblings.
Regards
Toni White