Jacobus Johannes was die seun van Jacobus Paulus Johannes Nel en Helena Claudina Greyling.
Uit hulle ma se sterfkennis van 1920: 
FAMILYSEARCH
Uit hulle pa se sterfkennis van 1932:
FAMILYSEARCH
g.7. Jacobus Johannes NEL, geb. 27/09/1879, ged. 09/11/1879
g.7. Jacobus Johannes, geb. 27/09/1879, ged. 09/11/1879, Maclean, oorl. 26/01/1954, Matatielex 02/10/1905, Kokstad, Mount Currie, KP met Elizabeth Hendrika SNYMAN, geb. 06/04/1883, oorl. 03/03/1980, d.v. Jacobus Nicolaas Petrus Snyman en Jacomina Jacoba Cornelia Crous.
