Andrés Marzal de Sas

Andrés Marzal de Sas, or Andreu Marçal de Sax (fl. 1390–1410) was a painter of Dutch origin who worked in Valencia. Based on his name, he was from Sas van Gent, although some sources indicate he may have been from Saxony. Between 1393 and 1399, he collaborated with Pere Nicolau. His only documented work is a "Doubting Thomas", now in the museum of Valencia Cathedral.