A few weeks ago I finally made it down to the Public Record Office in North Melbourne. It's like the more uptight sister to the State Library.
I looked through files containing details of the hotel interests of one of South's founding vice-presidents, Floros Dimitriadis, principally the Duke of Kent Hotel on La Trobe Street - where South was born. That is, it was the place where the newly formed Hellas - the merger between Hellenic and Yarra Park - amalgamated with South Melbourne United, completing the triumvirate.
Check the comments section of the relevant post to see what we confirmed, and what other tidbits we've learned.