Waiting with bated breath for the Probate packet...............
You and I both!
I note that there are a couple of mentions of D HOLBORROW arriving 1839 from (via?) Launceston (Tasmania or Cornwall?) - I assume that's Daniel but can't see anything for John/Isaac.
I believe Tasmania - its mentioned in his obituary that he arrived on the barque Annie Watson and the corresponding passenger manifest suggests Tasmania and not Cornwall - the journey was only 4 days.
Thanks also for those photos/maps of Daniel's shop - I'm always amazed at what information lies out there!
Yes, I had come across this Thomas Maggs alias Holbrow character before but had discounted him as a possible for John Isaac Holborow based on the dates on his death certificate. Although if he was a convict and had "absconded" then perhaps he would've been somewhat economical with the truth ... although for now I am discounting him as a candidate!
Interesting about the lack of possibilities regarding his arrival in NSW - if he wasn't on any of the manifests, does it mean that he may have come from a neighbouring state? I have to confess that I'm somewhat woolly with Australian history off the top of my head and when each statehood was granted - but could he have come overland via Victoria?
Ahh - I have now searched the online indexes (only the Index of Assisted Immigrants is available for the period in question) and can't find a single Holborow/Holbrow/Holborrow/Holborough ...
Thanks for all the effort you guys are extending on this fellow! I really do appreciate it!

Looking forward greatly to receiving the images of the probate packet following Ros' visit on Tuesday! I'll definitely share anything here!
Dom