Scholars are not sure whether "M. Souch" refers to Mary Zouch, a maid-of-honor to Jane Seymour, or, in abbreviation, to "Mistress Zouch", which could be either Jane Rogers, wife of Richard Zouch... or Anne Gainsford, a lady-in-waiting to Anne Boleyn and wife of George... The chalk seems to have been reinforced by later hands around the bodice and in other places, but the penwork and the flower apppear all Holbein." https://commons.wikimedia.org/wiki/File:M._Zouch,_by_Hans_Holbein_the_Younger.jpg