I am looking for the family of a great grandmother, Henrietta Augusta PELKE, who was born September 19, 1867 in Grondzaw [Polish "Grazawy," near Brodnica, the old Strasburg], West Prussia, Germany; she died February 10, 1912 in Glen Lyon, PA. She would have been Lutheran as her birth date was obtained from the Lutheran Church she attended in America. According to her death certificate, she was the daughter of Karl PELKE and Dortha ZELESKI. While her given name was Augusta, she was sometimes known by "Wilhelmina." This has been a dead end for me, so any assistance would be appreciated.