Peter Otto was die seun van Pieter Albertus Ryno Otto Nel en Ivy May Roberts.
Uit sy pa se sterfkennis van 1928:
FAMILYSEARCH
Peter went to a boys school in Balgowan
KwaZulu-Natal. Michaelhouse has a record of a former student Peter Otto Nel who
died in 1988 in their House publication mention a moment of silence held for
some former students who had since passed away. (https://www.wikitree.com/wiki/Nel-1255)