I have searched and searched
@MrsWattle.
FDW birthdate states 1942
Wonks at inquest says, 'a brother died before AW..... about 30 or so years ago' so given the other 'brother' DDW is an alias wonks has never used, it stands to reason he is still alive * ( I think we all know this to be the case), so that leaves FDW. And apart from the paper writeup I posted a while back that a FD died in accident, and looks to be dismissed by sleuths, I can not find anything else on that.
There are three indications that FDW is indeed deceased.
1. The Gentrees that show he is
2. IF you believe wonks
3. The newspaper clipping ( which was longer that "30 odd yrs ago" but that is wonkas wording)