Early Life, Family and Training Jan Rosen was born on 16 October 1854 in Warsaw, Poland. He came into a wealthy Jewish family that had converted to Calvinism, though his personal path eventually led him to become a Lutheran. Even as a young boy, it was clear that he possessed a natural affinity for the pencil and charcoal. He displayed an early talent for drawing, a skill that would eventually define his life's work. His formal path…