Hi again Ronnie,
I have found what I think might be your original man -
DEPOT: KAB (Cape Town Archives)
SOURCE: MOOC
TYPE: LEER
VOLUME No. 6/9/117
SYSTEM: 01
REFERENCE: 3170
PART 1
DESCRIPTION: BOXALL, HENRY. DEATH NOTICE
STARTING: 1866
ENDING: 1866
The name of the researcher in Cape Town is Graham Lloyd and his email is lacey[at]yebo.co.za
I think this might be the place to start. The death notice should list his place of birth, his parents, his spouse and children, plus where he died and whether he had property.
I have taken a note of every other Boxall death notice from every archive in South Africa and am in the process of typing up a list - it is beginning to show the beginnings of family groups. There were 105 entries for Boxall in the Archives, some of which may be of interest to you later on - divorces, court cases, property transactions etc.
The prevalent names are Henry, Arthur, Edward, George, Edwin, August, Albert, William, Percival, Stanley, Herbert, Vincent, Geoffrey and Hugh.
Hope this helps.
Cheers,
Tisy