Looking for the Connection of Arthur Onion of New Zealand Gisborne

Hi
I'd like to know any connections between Arthur Onion and his ancestors / siblings. The Arthur Onion I'm referring to here, is mentioned in the "Onion Marriages New Zealand - 1874 to 1931", which is a journal on this site. It looks like there is some connection back to England.

I've updated the additional children that Arthur had,as well as the name change he took (at least I think I've left that message - new user!!!)

Any help would be appreciated.

regards