Not an answer, but maybe some clues.
Afra is also listed in the
German Shepherd section of pedigreedatabase.com:
http://www.pedigreedatabase.com/germ...ee/473607.html
Dorn (see progeny) is also listed as having a puppy (Odur vom Haus Schutting) with this dog:
http://wolfdog.org/eng/dbase/d14141.html
Maybe someone is doing some research on early GSD lines? It's so interesting to see how type was more important than pedigree back then - and might include adding in dogs from different breeds. Even using both databases it is still difficult to see a connection to our breed.