FS J Holtze – Info Required

Can anyone confirm whether Flight Sergeant J Holtze (R.90336) and Fg Off Jack Holtze (J.85593 & KIA 2nd November 1944 are indeed the same person)?

I’ve tried the usual suspects (London Gazette, Flight Archive etc), but can find no record of a commissioning (circa 1943/44) for FS Holtze.

Many thanks.