W.toohey on Family Tree Circles

I am researching both of the above as part of the toohey family tree. Albert Neno married mary Foxcroft and left his son AH Neno with Mrs Foxcroft when he went to WW1. It has been said that Mary died giving birth to AH (albert Hugh) but this has not been confirmed. he was a plumer. David Roy and Harry neno - are they his sons from a 2nd marriage?