On the "Mosquito fates" spreadsheet compiled by Mark Huxtable theres this reference:
"In the ORB for 140 PR Squadron, on 2nd October 1944, Mosquito XVI NS523 took off at 08.15 hrs from Melsbroeck, on a sortie to Krefield - Duisberg. However, I don’t know if it was the outbound or inbound stage of the sortie, the a/c was intercepted according to the ORB by a P-47 of IX U.S.A.A.F., shooting it down near Louvain (now Leuven?), Belgium, resulting in the loss of the crew, S/L C.D.N. Longley and F/S J.T. Taylor. Based on the duration of a sortie of the same day it would have taken no more than three hours, which means the shoot down must have occurred some time before 11.15hrs. "2nd TAF" says MS523 (sic), with F/S J.T. Taylor aboard as navigator for F/L M. Jones, was hit by flak near Boulogne and crash-landed at 12.20, Category B damage, Taylor being injured. The P-47 pilot claimed this as a "Mosquito in German markings" (!). n October 2nd, Tubby Longley, who had commanded 'A' Flight 140 since March, was returning from the last sortie of his tour with his navigator, F/Sgt Taylor, when they were attacked by a Thunderbolt near Louvain and shot down: both were killed. (
http://www.34wing.co.uk/34wing.html) Shot down by P-47 on PR mission nr Louvain 2.10.44 (Air Britain Serials)"