Jan van Eyck, the most famous and innovative Flemish painter of the 15th century, is thought to have come from the village of Maaseyck in Limbourg. No record of his birthdate survives, but it is believed to have been about 1390; his career, however, is well documented. He was employed (1422-24) at the court of John of Bavaria, count of Holland, at The Hague, and in 1425 he was made court painter and valet de chambre to Duke Philip the Good of Burgundy. He became a close member of the duke's court and undertook several secret missions for him, including a trip (1428-29) to Spain and Portugal in connection with negotiations that resulted in the marriage (1430) of Philip of Burgundy and Isabella of Portugal. Documents show that in 1432-33 van Eyck bought a house in Bruges. He signed and dated a number of paintings between 1432 and 1439, all of which are painted in oil and varnished. According to documents, he was buried on July 9, 1441. Van Eyck has been credited traditionally with the invention of painting in oils, and, although this is incorrect, there is no doubt that he perfected the technique. He used the oil medium to represent a variety of subjects with striking realism in microscopic detail; for example, he infused painted jewels and precious metals with a glowing inner light by means of subtle glazes over the highlights. ...