missing person since 1963-1965

In Australia, these records are arranged by state. South Australia doesn't have online search. But I suggest you contact:

https://www.sa.gov.au/topics/family-and-community/births-deaths-and...

I checked NSW and found no death record (latest year allowed for search is 1995). Also no new marriage up to 1975. Victoria and Queensland also have online search but cover fewer years

I suggest you utilise https://trove.nla.gov.au/ a source of newspaper articles where the name feigl appears numerous times... mostly outside of Adelaide... there are death records for an Anna Feigl... So limited information that a female named Anna Feigl died here in 1993... hope that helps... Cheers Jon

Further seeking on the name Feigl in South Australia Deaths..https://www.genealogysa.org.au/index.php?option=com_gsa&view=gs...=..... Births un der Feigl. . https://www.genealogysa.org.au/index.php?option=com_gsa&view=gs...=... happy to help you further if required... cheers Jon

more info uncovered on the feigl name in cemeteries with death dates in Adelaide. https://austcemindex.com/?family_name=FEIGL&state=SA