According to her Wikipedia article Margaret Douglas' son from her marriage to Duke of Lennox Matthew Stuart, Lord Darnley Henry Stuart, married Mary, Queen of Scots who bore a son, James VI of Scotland and James I of England.
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Margaret Douglas' Spanish farthingale silhouette is comparable to that of Francis Audley and Queen Elizabeth in 1569-1570. She wears a long scarf and appears to be wearing a fur-trimmed cloak.
Keywords: Margaret Douglas, Douglas family, Stuart family, Countess, attifet, headdress, high enclosing neckline, ruff, fur, long close sleeves, cuffs, vee waistline, cloak, Spanish farthingale, scarf, fur bodice ornament, fur skirt ornament, gloves