Keywords: Simone Martini - Madonna of Mercy - WGA21344.jpg between 1308 1310 Tempera wood size cm 154 84 Institution Pinacoteca Nazionale Siena object history credit line accession number WGA link 21344 http //www wga hu/art/s/simone/1early/3mercy jpg http //www wga hu/html/s/simone/1early/3mercy html PD-old-100 painting religious Italian 1301-1350 Paintings in the Pinacoteca Nazionale Siena 14th-century paintings of Virgin Mary WGA form painting WGA type religious WGA School Italian WGA time period 1301-1350 Paintings by Simone Martini in the Pinacoteca Nazionale Siena |