The survival rate for passenger lists in Australia is poor and the reason you won't find anything more is simply because most of the emigrants on the
CANTON were free ie not assisted. Documentation survives in the form of Certificates for Final Departure for Assisted Emigrants under the authority of the Colonial Land and Emigration Commissioners etc. departing England but the
CANTON is not on that list in 1846.
Also should be noted from Di
CUMMINGS website "Each link is directed to an image of a list of passengers for that particular ship.
Unfortunately the information on some images may not be 100% accurate, as they were transcribed from microfilmed images of the 'South Australian Register' newspaper of the day. Where possible the list has been compared with photocopies of actual passenger lists (many of which are difficult to read)."
http://nla.gov.au/nla.news-article158922943The Adelaide Observer 1 Aug 1846
The Canton, 506 tons, Friend, master, left Gravesend on the 20th April, and Plymouth on the
27th of the same month, bringing 256 passengers,
of whom the majority are free emigrants, including, a hundred female servants. This ship, which has made the present passage in ninety four days, performed her first voyage to South Australia several years ago, when she brought cargo for the South Australian Company.
Cheers
Cando