Research Notes:
[1] The family tree of a person who has a DNA match to Robert shows a lineage to Lorentz Kleinfelter, child of Hans Peter Kleinfelter and Eva Elizabeth Kunkel, descent: Christianna Kleinfelter, John Sheffer, Mary Jane Sheffer, Bertha Agnes Hershey.
[2] The family tree of a person who has a DNA match to Robert shows a lineage to Lorentz Kleinfelter, child of Hans Peter Kleinfelter and Eva Elizabeth Kunkel, descent: unclear. Perhaps Jacob Klinefelter, Adam Klinefelter, Salome Klinefelter, Amanda Magdalena Albright.