Otto (Osias) Eisenfeld (1895-1983) immigrated to the United States from Rzeszow, Poland sometime after 1918. He had served in the Austro-Hungarian Army during World War I. His father, Kalmen, died in 1918, during the influenza pandemic. Erna Nager Eisenfeld also immigrated from Rzeszow, Poland. Otto and Erna Eisenfeld married in Carnegie, Pa. in 1924 and had three children: Kalmen “Kelvin” Eisenfeld, Sidney Eisenfeld and Jake Eisenfeld.