Found a marriage and a death for Norman.
Marriage: NORMAN R. ROUNSEVELL Oct-Nov-Dec 1943 Liskeard, Cornwall reg 5c 121 to MARGERY J. ROWE.
Death: NORMAN ROY ROUNSEVELL January 1989 Liskeard, Cornwall reg 21 231 189 and with a date of birth of 10th May 1918 which ties in nicely with him being 8 on his journey to UK.