ルーカス・クラナッハ
Master IW (or I.W.) was a 16th-century Czech Renaissance painter of unknown origin from the school of Lucas Cranach the Elder. Among his masterpieces exceed "The murder of St. Wenceslas" (1543, St. Vitus Cathedral, Prague) and votive pictures now on view in Northbohemian Gallery, Litoměřice.