FLT SGT ERNEST JOHN RYAN

Hi
Can anybody help me with any information on the wartime service of the above N.C.O. I know that he qualified as a FLIGHT ENGINEER, and was based at R.C.A.F WOMBLETON, which was a training base for training crews for conversion to heavy bomber like Lancasters and Halifaxes.
I know nothing of his service after Wombleton, and would like any information on any operational squadrons he was attatched to. One of his medals is a France and Germany star, so presumably he saw service over Europe. I have been told that he may have been entitled to an Aircrew Europe star, as he he joined the R.A.F as a boy entrant.
Any information would be appreciated.

Cheers
Graz