Have you the correct information, Lancaster (NG323) WP-J.did crash on landing on 21st December 1944 but no oee appeares to have been Killed.

A quick check of http://www.lostbombers.co.uk
shows NG323 to be WP-G, not WP-J. Also doesn’t list a crew member named Evans.
http://www.lostbombers.co.uk/bomber.php?id=1358

Interestingly, there is a Stirling WP-J (90 Sqn) with a surviving Evans on board.. but most likely a different Evans…
http://www.lostbombers.co.uk/bomber.php?id=10653