Dear Christian,
There is a short biographical note here:
http://www.ww2.dk/Lw%20Offz%20-%20G-...Apr%202016.pdf
and here only his date of birth is repeated:
http://www.anticrohn.de/Namen/k.htm
(It would be his birthday today if he were alive. :-) )
And here is some information about his aerial victories:
http://www.worldnavalships.com/aces.php?PilotID=1659
Best wishes,
Teresa