Looking for info on Lt. Böing or Boeing 3/nachtjagdschule 1

[Rikwink]

Hi,
I recently got some items from one of the relatives of Leutnant Böing.
A few of the funeral sashes that were with the items have 3/Nachtjagdschule 1 printed on them.
On his original business card it says Leutnant der Fliegertruppe.
According to the relative he was a Staffelkapitan and stationed at Ingolstadt-Manching and crashed in late 1942.
That story matches up with the Nachtjagdschule. There are also a few images on the website of Peter Spöden regarding the burial of a Leutnant Boeing in 1942, these images suggest it is winter/snowing. I assume Böing and Boeing were one and the same.

In the Kracker LW archive I can find the following:
Boeing,Lt Fighter Pilot Training Detachment at Ingolstadt Bf 109F KIFA 1943. Rumored to be the nephew of American AC Mfg, William Boeing.

That is all I can find. He is not mentioned in the Luftwaffe Career Summaries.
Is there anyone who has or can find some more info on him?

Hope you can help me. Thanks in advance.
Rik