Another possibility for their sons (if any) is service in WW1. http://naa12.naa.gov.au/NameSearch/I have been browsing these without finding anything definitive (but I must admit that I get distracted by the sad and/or interesting stories)But there are South Australian experts (Kris for example) who can look up births, marriages etc in South Australia. I wonder if adding South Australia to the topic name will attract their attention?regards, Ros