Posted on 1st September 2013 by melyn Gwerther is the Cornish word for salesman Yes, salesman in Cornish is gwerther Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Keskomunyans is the Cornish word for communicationNext post: Daswul is the Cornish word for redo