Jasta 25/38 Pilots

[jager1]

I'm trying to find the name of a pilot with the initials H.P.who served in Jasta 25 or Jasta 38(or possibly both) but had also previously served in FFA66 and FA34 as a two seater pilot. Has anyone got any suggestions.

I've come up with Vfw Pinkert who served in both Jastas and Vfw Pape who served in Jasta 38 but I can't find either of their first names or service previous to Jasta.

Thanks
Jager1