Zeehan (or Mount Zeehan) does seem a long way from Hobart, where, if it's him, his birth was registered:
b 28 Aug 1850 (male) parents Charles Wilson (boatman) and Sarah (Bond) (Charles b 4 Aug 1850 from bp)
https://librariestas.ent.sirsidynix.net.au/client/en_AU/tas/search/detailnonmodal/ent:$002f$002fARCHIVES_DIGITISED$002f0$002fARCHIVES_DIG_DIX:RGD33-1-3/one
image 265 (/ 291) Old Wharf (Sarah x mark)
but the next child to be born, George, was registered in 1852 in New South Wales.
Charles wouldn't have been old enough to remember New Zealand at such a young age, I don't think, if they went to New Zealand in between, but his parents might have talked about it.