tenth creation) the following day, by Edward VI. Herbert's eldest son and heir, Henry, married Lady Catherine Grey at Durham House on 25 May 1553, the same day as her sister, Lady Jane Grey, was married to Northumberland's son Guilford Dudley. The third couple married that day was Northumberland's youngest daughter, Katherine, to Henry Hastings, 3rd Earl of Huntingdon. After the death of Edward VI, Herbert initially supported Northumberland's attempt to place Jane on the throne. When it became clear that Lady Mary Tudor would take the throne (as Mary I), he cast his daughter-in-law Catherine out of his house and had the marriage annulled. Lady Catherine's father and sister Jane were both executed for high treason in February 1554 by order of Queen Mary I. Herbert managed to distance himself from the Grey family after their fall, and obtained the new queen's favour by crushing Wyatt's rebellion. During the Italian War of 1551–1559, Herbert commanded the English army sent to France in support of Spain. His troops did not arrive in time for the Battle of St. Quentin (1557), but played a significant role in the capture of the city afterwards. Pembroke was Mary's most effective commander in the war with France. Mary sometimes suspected Pembroke's loyalty, but he was employed as governor of Calais, as president of Wales and in other ways. He was also to some extent in the confidence of Philip II of Spain. The earl retained his place at court under Elizabeth I until 1569, when he was suspected of favouring the projected marriage between Mary, Queen of Scots, and the Duke of Norfolk. According to John Aubrey's very colourful Brief Life, he could "neither read nor write" but "had a stamp for his name." Aubrey wrote: "He was of good naturall parts, but very colericque. In Queen Mary's time, upon the return of the Catholique religion, the nunnes came again to Wilton Abbey; and this William, Earl of Pembroke, came to the gate which lookes towards the court by the street, but now is walled up, with his cappe in his hand, and fell upon his knees to the Lady Abbess and nunnes, crying peccavi. Upon Queen Mary's death, the Earl came to Wilton (like a tigre) and turned them out crying, 'Out, ye jades! to worke, to worke—ye jades, goe spinne!'" Herbert had a secretary, Robert Streynsham, who lived in the parsonage in