Hello Theo,
You may find the info you seek in Chorley's RAF BCL 1942 .
12 Sqn Wellington Z8376 - page 102 - Lt Alois Lechner, III./NJG2. Crash Dusseldorf.
12 Sqn Wellington Z8643 - page 103 - crashed in a forest area near Dorsten.
22 OTU Wellington R1714 - page 104 - Flak - crashed near Mönchengladbach.
103 Sqn Wellington DV452 - page 106 - Crash ? Germany.
142 Sqn Wellington Z1208 - page 106 - Crash Stefanstrasse, Neuss.
You may find updates in later volumes or perhaps look at it online at
-
http://www.rafinfo.org.uk/BCWW2Losses/
Or Here -
http://forum.12oclockhigh.net/showthread.php?t=38279
Good hunting
Alex