England is exceptionally late, among the wealthier regions of western Europe, in developing a native school of artists of sufficient distinction for their names to survive. The exquisite Wilton Diptych, dating from the 1390s, may have been painted in England (its origin is uncertain), but it has no national characteristics (being classed in the International Style) and it is anonymous. From the period when the great Renaissance masters are at work in Italy, the Netherlands or Germany, there is no English artist whose name survives. When English kings and nobles want their portrait painted, they look to continental Europe for someone with the necessary skills.