I think I have something for you re John Serapio Parkes! JUNIOR that is! What he is doing in our relative's grave is a mystery we have been trying to solve for years!
The one name link we also have in common our both our trees is the common name of WATSON.
See if this works:
James Wise (born 1851) married Emily Louisa nee Watson (1851)
Emily Louisa Watson had two brothers Francis (1850) and Jeremiah (1854)
Could either of those two boys have been married to your Mary Agnes Watson, nee Murray?
That is a long shot, but thanks to your tree opens up new options.
Mary Agnes Watson nee Murray, on your tree (and on my Parkes tree)appears to be a divorced wife of John Serapio Parkes SENIOR, without issue.
It seems that the Wises, Watsons an Tabrums were friends in South Africa and it also appears that they worked together in addition to their children marrying each other.The fact that John Serapio Parkes JUNIOR is buried in James Wise's grave makes me believe that the Parkes were also part of that tight family/colleague/friend group in some way.
Did Mary Agnes nee Murray marry Francis Watson initially, then John Serapio Parkes secondly and which ended in divorce? But still, why the 13 year old boy in "our" grave in LONDON, UK?The teenager's mother was Victoria Ellen Johnston.
I am sending you a duplicate of this message by email and in itam attaching a pdf file of my "side" tree on Parkes - hope it helps.Each name does need to be confirmed - something I have not got around to as my family history is on the back burner for the moment.However... some comment the other day rekindled my curiosity!