In Archion I searched for "Sorge-Seitendorf, Greiz, Reuss a. L." as shown in the Meyers Gazetteer and it returned results for "Central Germany: Landeskirchenarchiv Eisenach, Church district of Greiz, Grosskunstdorf with concern". The two communities are adjacent to each other. I'm wondering if the Grosskunstdorf includes Sorge-Seintendorf? I'm not finding the 1858 marriage record of Johann Heinrich Piehler (1835-1886) married Wilhelmine Seckendorf (1833-1895) despite the Teichwolfransdorf marriage banns showing they were married in Sorge.