The Zella-Mehlis Fehringer family of gunmakers is listed by Kellner & Pape with two, apparently simultaneus addresses, Anspelstrasse 50 and Unterzella 10, perhaps shop and home. Apparently it encompassed 3 Generations. Hermann is mentioned in 1913. In the 1920s they were known as Fehringer & Söhne, with Hugo and Erich at the same addresses. Willi finally continued from about 1935 to the end of WW2.