From my grandfather I received documents and research about the Hägler family. Included was a 1925 newspaper article (copied, not original newspaper), in German, titled Die Hägler Eine oberpfälzische Bauernfamilie in 300 Jahren" "Von Pfarrer Thomas Rieß, Rothenstadt". The publication is Heimatblätter für den oberen Naabgau.
No copyright information and to my knowledge the publication no longer exists.
I would like to upload it and offer it to anyone who would like an overview of the families in the region.