I have sent for the Civil Service Evidence of age in the hope that this might shed some light on it and have today tried to contact my IOW cousins who knew him better than me as they all lived a couple of miles from my Grandparents, waiting for one of them to ring me back, and if as previous posts say his death was registered in both names obviously my Nan must have known about it and perhaps the IOW cousins might have my grandparents paper work tucked away somewhere