Can you give us some dates, please? Parents or siblings for Hugh Madison? Is Hugh Franklyn a family name - there was a Hugh Franklin Doss in MO (sorry - Missouri - I forgot you are Australian!)? Anything would help.
I think I know which one he is but . . .
I might also suggest a wonderful group of folks on th Doss mailing list. Go here to subscribe:
http://lists.rootsweb.ancestry.com/index/surname/d/doss.html... ?This is a great group of people and wonderfully helpful.
I'm thinking this might be your line in this message:
http://archiver.rootsweb.ancestry.com/th/read/doss/1999-07/0... see the note about A.J. Doss (Ambrose Jackson).
Happy time travels,
Susan