Searching electoral rolls is a fairly arduous task, especially if you find that they move away from the division, so having to pay someone to do it for you would probably be too expensive. But you could at least start with Dromana and see how far forward you can come. Most researchers are happy to search to your specific request. Have a look at the AAGRA website for a list of researchers/record agents. http://www.aagra.asn.au/directory/membersearch.php They will usually give you a quote, and you just have to decide how much you are prepared to spend. Have you tried writing to the local paper to see if any current residents remember them? It has worked for me, and many other people. 'The Mail' (Mornington and Southern Peninsula) http://www.fcnonline.com.au/vic/PAGE.aspx?PageRun=PUBS__MPI and 'The Leader' http://mornington-peninsula-leader.whereilive.com.au/ are local papers.Try sending your request to the editorial email address or the 'contact us' link. Good luck.