In 1628, the Infanta Isabella despatched Rubens on a delicate political mission to the court of Spain, relative to the critical state of the government of the Low Countries, and for instructions preparatory to a negotiation of peace between Spain and England. On his arrival at the Spanish capital, he was received in the most gracious manner by Philip IV., acquitted himself of his diplomatic mission to the entire satisfaction of the Infanta and the King, and completely captivated that monarch, and his minister, the Duke de Olivares, by the magnificent productions of his pencil. He executed several great works, for which he was munificently rewarded, received the honors of knighthood, and was presented with the golden key, as a Gentleman of the Royal Bed-Chamber. In 1629 he returned to Flanders, and was immediately despatched to England by the Infanta, on a secret mission, to ascertain the disposition of the government on the subject of peace. The king, Charles I., an ardent lover of the fine arts, received the illustrious painter with every mark of distinction, and immediately employed him in painting the ceiling of the Banqueting House at Whitehall, where he represented the Apotheosis of his father, James I., for which he received £3,000. Here Rubens showed himself no less skillful as a diplomatist than as a painter. In one of the frequent visits with which the king honored him during the execution of the work, he alluded with infinite delicacy and address to the subject of a peace with Spain, and finding the monarch not averse to such a measure, he immediately produced his credentials. Charles at once appointed some members of his council to negociate with him, and a pacification was soon effected. The King was so highly pleased with the productions of his pencil, and particularly with his conduct in this diplomatic emergency, that he gave him a munificent reward, and conferred upon him the honor of knighthood, Feb. 21, 1630. On this occasion, the king presented Rubens with his own sword, enriched with diamonds, his hat-band of jewels, valued at ten thousand crowns, and a gold chain, which Rubens wore ever afterwards. DEATH OF RUBENS.