Martin John was die seun van Johannes Jacobus Strydom Nel en Margaretha Sophia Zeederberg.
Given names at birth were most likely - Marthinus Johannes Nel. Mother changed family the name to Nelson after the death of father JJS Nel (1924) and first and second names to Martin John (not confirmed). This was done by Deed of Poll. Died in 1987, was cremated in Harare and ashes buried in the Moth Shrine at Matopo Hills Zim.