I normally don't see mention of Godparents in any Parish Registers, unlike in Sweden or some English records. You just occasionally find a farm (Balla-), or father's occupation. 
With this date you'll probably have much better luck with the 1851 Census for family details. The Isle of Man is small enough that it won't ake you 6 months to check out all the Census records. There are also some alphabetical indexes to the Censuses.