Early Life, Family and Training Johan Hammer was born around 1640. His roots likely trace back to Germany, and he may have been the brother of the portraitist Hans Jurgen Hammar. By 1655, he was already working as a German journeyman within the studio of Werner Rölefintz. This early period of his life was defined by the steady, practical work of a craftsman learning the nuances of his trade in a professional workshop setting. His pers…