Benhall Wadd is a marshy area next to a ford in Benhall Green in Suffolk.    A sign put there by the Suffolk Wildlife Trust says that "Wadd [sic] is Old English for a ford".    Wadd Lane is marked on the OS 6" map.    As far as I can tell, all other East Anglian place-names which descend from gewęd now have the form wade, as in Cattawade.    Where does this short-vowel form come from?   (There are Great and Little Wadd Farms at TQ797408, near Frittenden in Kent.)

Keith