I certainly wouldn't disregard that at all Neil - could be quite possible that Wooton/Wotton are the same!
I've researched quite a few Wottons who entered Australia via SA. A large family. Some of them moved through VIC, NSW and QLD, also WA.
I wonder if they are related. Maybe his obituary would be a good start on Trove (if it's there?).
And regarding the spelling, the ones I chased were alternatively Watton, Wotton, Wootton etc
