Bits of information that I can't connect with any particular family or is additional to name Hughesman/Youseman
Report from 617 squadron

Lancaster Mark 3 (ED735) code number KC-R
lost in transit 17-11-1943
Crew as followa
F/L EEG Youseman DFC
P/O SJ Whittingham DFM
P/O L Plishka RCAF
F/S R Florence DFN RNZAF
F/O WC Grimes DFM
P/O AM Laughland DFM RCAF
WO1 JB De C O'Grady RCAF