Edward Grimston
Grimston was a diplomat in the service of Henry VI, King of England. He holds a chain of linked SSS, a Lancastrian device, in his hand. On the wall behind him are two shields with his coat of arms. In 1446 Grimston is known to have visited Calais and Brussels as an ambassador. It would have been easy for him also to travel to Bruges, where Petrus Christus worked.