The Wilton Diptych was painted as a portable altarpiece for the private devotion of King Richard II, who ruled England from 1377 to 1399. The diptych is thought to have been made in the last five years of Richard's reign, although its artist remains unknown. It is called The Wilton Diptych because it came from Wilton House in Wiltshire, the seat of the Earls of Pembroke.

This is a close-up detail from the Wilton Diptych, the full image and other details can be seen below.