Thanks Robyn,
Had a wander through TROVE.....I think the name was PUDDICK under the Birth's column you referred to.......and then tried PUDDLICK, but nothing sadly. The interesting reference was JM's find under the "Dead Letters" advertisement, which at least confirms he knew he was going to Melbourne, where he worked for a William Hall of Williamstown for the first 3 months. Maybe the goldfields were the black hole he vanished into.
I think Mr. DUDLICK's destination is inevitably the Pending Tray.
Take care,
Tony