The earliest examples of art from what is now Scotland are highly decorated carved stone balls from the Neolithic period. From the Bronze Age there are examples of carvings, including the first representations of objects, and cup and ring marks. More extensive Scottish examples of patterned objects and gold work are found the Iron Age. Elaborately carved Pictish stones and impressive metalwork emerged in Scotland the early Middle Ages. The development of a common style of Insular art across Great Britain and Ireland influenced elaborate jewellery and illuminated manuscripts such as the Book of Kells. Only isolated examples survive of native artwork from the late Middle Ages and of works created or strongly influenced by artists of Flemish origin. The influence of the Renaissance can be seen in stone carving and painting from the fifteenth century. In the sixteenth century the crown began to employ Flemish court painters who have left a portrait record of royalty. The Reformation removed a major source of patronage for art and limited the level of public display, but may have helped in the growth of secular domestic forms, particularly elaborate painting of roofs and walls. Although the loss of the court as a result of the Union of Crowns in 1603 removed another major source of patronage, the seventeenth century saw the emergence of the first significant native artists for whom names are extant, with figures such as George Jamesone and John Michael Wright.