 Heinrich Engelhard Steinweg first made pianos in the 1820s from his house in Seesen, Germany.He made pianos under the "Steinweg" brand until he emigrated from Germany to America in 1850 with his wife and seven of his nine children.The eldest son, C. F. Theodor Steinweg, remained in Germany, and continued making the Steinweg brand of pianos, partnering with Friedrich Grotrian, a piano dealer, from 1856 to 1865.