I am researching Gottfried Lange and Caroline Turski. they came from DanZig area about 24 miles south on the junction of two rivers,Vistula and negat. Emma was my grandfather Heinrich Gottfried (Henry) sister. she married Louis Backus.
Ludwig Wilhelm Heinrich Backhaus 15 Aug 1875 21 jun 1955. note spelling change. hope this helps. sons arthur 1902 to 1966 and harry ludwig Backhaus 1905-1914
lange and turski came from Muttersegen Finkenstein (LDS Reel # 0208082)