Complex sentence: Christian Friedrich Theodor Steinweg, anglicized name C.F. Theodore Steinway, (November 6,1825, in Seesen--March 26,1889, in Brunswick), piano maker, and the eldest son of the famous piano maker and piano company founder, Henry E. Steinway.
Split into simpler sentences: Christian Friedrich Theodor Steinweg, anglicized name C.F. Theodore Steinway (November 6,1825, in Seesen--March 26,1889, in Brunswick), was a piano maker. He was the eldest son of the famous piano maker and piano company founder, Henry E. Steinway.