For examples of the later use of the word, see Nares by Halliwell and Wright, art.
Consult the new edition of Nares' Glossary, voce Walsingham.
He is not going like Nares to face the perils of the far North.
Under this persuasion Drayton put script of mart as equivalent (Nares).
Nares, in his Glossary, says that crants is a German word, and probably Icelandic.