Hi Jorose,
it seems that he followed his older brother John to Australia.
John arrived in Australia in 1841 (I have the shipping details), and Joseph arrived in 1844, both to NSW. I have the shipping for Joseph too and it states to be with brother in Maneroo (Monaro).
Now his brother has moved on to Vic for the birth of his first child in 1846.
And Joseph was back in the UK for his marriage in 1847.
Which is why I have such a small time span to search in.
Joseph did two more trips to Australia, guess he could not make up his mind.
Second trip was with wife and child to Geelong in Vic. They went back home to Yorkshire and had another child.
The last trip, he came out with other brothers and his wife and children followed later, he stayed this time

I have all the shipping to Australia.

thankyou, what a shame the records weren't kept that early.

Margaret