Two Feldwebel Pfeiffer of IV./NJG 1

[Johannes]

Hi Guys

I am currently checking my Feldwebel Karl-Georg Pfeiffer of IV./NJG 1 biography against his claims from his flugbuch, and there is a problem.
He was born on 28.11.1919 and lived to at least 2008, highest rank was Oberfeldwebel.

He flew 142 combat sorties, the last half without any claims. The mikrofilms matched exactly his flugbuch until 1944 where there is an additional claim which must have been unconfirmed on 01.05.1944(time 2308-0138 uhr)
However there is no mention of the claim for 13.06.1944 I had attributed to him with 11./NJG 1 at 0034 hrs as a Feldwebel.
I am thinking now that as his last two claims were with 12./NJG 1 that this is a different individual and that the name and rank being the same is just a coincident !

Question kind gentlemen is does anybody know the forename of this Feldwebel Pfeiffer flying for 11./NJG 1 on 13.06.1944?

Kind Regards

Johannes