Mate,
I was looking to find a possible name of a Pilot in (Jasta 55) Jagdstaffel 1 (F) called Kroker (spelling in Ole Nikoljsen)
The only man I could find his Wilhelm Kroker was was killed (Verlustlisten 1. Weltkrieg)
VzFeldwebel
Parchwitz, Liegnitz
tödlich abgestürzt (fatally crashed)
No date other then in 1916 possibly around June/July 1916?
So another to add to your list
If possible can you indentify who the Kroker is in Jasta 55?
Cheers
S.B