Mystery USAAF Lieutenant

[Henk Welting]

At the bottom of the website http://www.yesteryears.com is a possibility to click for "Lancaster Bomber Aircrash 1945".
Here is told the story on Lancaster RF230 of 514 Sqn crashed 9-5-1945 during Op. Exodus, killing the crew of six and 25 (!) passengers.
One of the passengers was a USAAF Lieutenant whose name was not on the manifest !
There are some websites on this accident, some have 30 casualties, others 31. An e-mail sent to the originator of the site for more info was bounced.
The USAAF Lieutenant - if killed on board this aircraft - was not buried at Clichy; his remains initially may have been buried at the US temp Mil. Cem. at Solèrs near Mélun. On this temp cemetery were two USAAF airmen who died 9-5-1945 but their remains reinterred. Their names:
J.L. ACTON, and
Walter J. GOODMAN (from Ohio).
They could have been reinterred in a US Mil Cem in France or even repatriated to their homeland.
Who has more info on crew and passengers of Lancaster RF230 and this mystery US passenger.
I've all names of the "6" crew and the "24" passengers, all buried at Clichy.
Thanks in advance for your help.
Regards,
Henk.