Have you tried the Brew website? brew.clients.ch/BrewONS.htm

And in particular: brew.clients.ch/Lonan.htm#Lonan

The William Brew given there bapt 25 April 1841 son of James Brew & Elizabeth McKNEALE looks likely to be your one if his age fits census records - see also on that website - because his father was given as James at his marriage (see new familysearch).

Also, when you are looking for descendants, it is helpful to give names and dates for their children.

Sue