I have established that his half brother, Francis Hawkins, married and had at least two sons. The eldest appears to be William Francis Spencer Hawkins (born 1896) in Richmond, Surrey, who was educated at Rugby School, according to the 1911 census. William's brother was Leonard (born 1899), Letters preserved at the Essex Record Office show war-time correspondence between Reeve and his nephews. He seems to have had a close relationship with William, who he accompanied to Waterloo Station in London to bid him farewell as he went off to War in 1915. William was one of two executors of Reeve's will.
I have done some searching of William's full name and find that a person by an identical name was married in 1933 to Eva Fitzgibbon at St George's Church, Hanover Square, London. Separately I find a person with identical name, born 1896 and died 1979, as Master of the Court of Chantry [Chancery] from 1933, becoming Chief Master in 1959, and honoured C.B. in 1968. He has two portraits in the National Portrait Gallery.
The question is whether this is the same person., and secondly whether there are any descendants of this gentleman around.
Please let me know.