There is a 2 page thread here that seems to come to a conclusion.
http://www.rafcommands.com/forum/sho...G-WHIBLEY-RAAF
http://www.rafcommands.com/forum/sho...LEY-RAAF/page2
This link gives:
407565 Sergeant WHIBLEY, Leonard Garth
It also has info on the plane, OL-M , L7387, and the action that killed Whibley. It may or may not be correct??
http://www.awm.gov.au/catalogue/rese...9125z004_1.pdf