Looking for Michael Francis Cantwell of Terang Vic Australia

I am looking for Michael Francis Cantwell born 1879 to William Cantwell and Winifred Stephenson/Stevenson in Greendale. They moved to Terang around 1900. The last documented evidence was in the 1903 Victorian Electoral Rolls in the Corangamite district. Seems to have disappeared after that. Was said to have died during the WW1 years but definitely did not sign up. Could possibly have gone overseas.