Smith and Benger attribute the stamp to the family of Malveysin. There were a large number of families in the thirteenth century with arms of three bends. Most of these are extinct, or exist only in the quarterings of families descended from their heiresses. The family of Malveysin seems to have ended among several heiresses. Of those that survived into the eighteenth century, the family of Travers of Devon had these arms but with a crest of a griffin’s head. The bookplate in the manuscript has a bookplate [Franks 28811} with the same crest, but with the monogram J S (?) which may rule out Travers.