Yes William was the father of William Leslie Dwyer b 1918 - but where does it fit with the surname Aichingson?
William snr must have survived WW2 as there are Dwyer/Cummings births to 1932
No remarriage for Lily to an Aichingson or similar??
It would be much better if Magslote directed the Curious Fox posters to RC so we can get the info first hand