Wordsmith Webster (4)
I believe the answer is:
noah
'wordsmith webster' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for noah that I've seen before include "A very early sailor" , "Webster?" , "Sailor who ran aground on Mount Ararat" , "The first known boat builder (4)" , "Old ship builder" .)