The Dempewolf Family came from Germany, probably Hannover in the 1800's. They settled in Baltimore Maryland. Some of the Dempewolf's moved to New York about 1898. Otto Dempewolf, and his sons Charles Harry and William Anthony worked in the piano manufacturing business. A son, named Otto Jr. died young. He climbed a tree, fell out, walked home and died ( about age 8)William Anthony served in the US Marines in World War I. He also worked for the American Bank Note Company in New York. Otto's father was named Carl, or Charles Dempewolf. Other names in the family tree include, Laub, Schaeffer, Selig, Feldman and Dion.