ca. 1534-1536 Katherine, Duchess of Suffolk and 4th wife of Charles Brandon, by Hans Holbein the Younger (Royal Collection)
Her Wikipedia article is here.
From Wikipedia.
Lady Catherine wears an English hood with a striped coif beneath it. The wide veil hangs down from the sides. Her dress has a blackwork collar and vest-like upper bodice. Holbein hints at the use of pearls in Catherine's hood.
Keywords: 1534, Holbein, Duchess Katherine of Suffolk, Willoughby family, Bertie family, Duchess, British, English hood, jeweled headdress, veil, high enclosing neckline, blackwork, full sleeves, split over-bodice