Simon Glancey has submitted the following:
Sgt Lanaghan was killed when Handley Page Halifax III LV899 EY-Q of 78 Squadron was lost on a mission to Nurnberg. It is believed the Halifax was shot down by a Luftwaffe night fighter on the return journey, and it crashed near Maybert-Fontaine, in the French Ardennes, with the loss of all seven crew members.
Royal Air Force Bomber Command Losses of the Second World War: 1944; W.R. Chorley; 1997; Midland Counties Publications; ISBN 0 904597 91 1, page 148
He is remembered in Aykley Heads on A41.02 and in Durham on D47.150