Current knowledge
Longleat
Marcus Gheeraerts the Younger
Robert Sidney, Earl of Leicester (1563-1626)
Note the work cited at Longleat forms a probable match with he seventeenth-century record
Van der Doort 1639
Marcus Gheeraerts the Younger
Earl of Leicester, all in black, holding a pair of gloves in his left hand, a red table and curtain nearby
Sale Inventory c.1649-51
Walpole Society reference (1972):