The Life and Workshop of Master IW Master IW, also known as Monogramist I.W., was a Czech or Saxon Renaissance painter active between 1520 and 1550, primarily in north-west Bohemia. He was trained in the workshop of Lucas Cranach the Elder in Wittenberg before moving to Bohemia. While he had significant clients, no written documents have survived to identify the IW signature with a specific name. Some records from the Prague painters' fraternity suggest a painter named Jan Wrtilka, who worked in Louny, was the guest master of the Prague guild, but the neutral designation Master IW persisted i…