Weyden Miniature from the first page of the Chroniques de Hainaut

About author:

Rogier van der Weyden or Rogier de le Pasture (1399 or 1400 – June 18, 1464) was an Early Netherlandish painter. His surviving works consist mainly of religious triptychs, altarpieces and commissioned single and diptych portraits. Although his life and career were generally uneventful, he was highly successful and internationally famous in his lifetime. His paintings were exported – or taken – to Italy and Spain, and he received commissions from, amongst others, Philip the Good, Netherlandish nobility and foreign princes.

Reference
http://en.wikipedia.org/wiki/Rogier_van_der_Weyden