I have a Gottlieb Popp, b. 1819 in Germany and who d.1900 in Wood County, and is buried at the gates of Heaven (Hillside) Cemetery in Marshfield, Wisconsin. He married Caroline Labbs and they had at least 10 children, listed below. Albert Ferdinand William Mathilde, b. 1847, married Albert Sievert Emma, b. 1856, married Carl Neuenfeldt August, b. 1860, married Bertha Siebert (Sievert?) Alvina, b. 1862, married Johann Freidrich Wilhelm Gauger Gustav, b. 1865 married Theresa M. ? Anna Louise, b. 1870 married Ernst August Albert Gauger Herman
This family lived in the Manville area near Stratford; some in Auburndale, some in Marshfield, and I htink all of these towns were in Wood County then and now I think Manville is in Marathon County.
I would love to hear from you and compare our notes. The naming pattern you had is so similar to what I have.