Jan Hendrik was die seun van Willem Andries Nel en Margaretha Isabella Strydom.
Source: Grahamstown - St George (Anglican), Grahamstown, Eastern Cape. marriage register, 1836-1849, page 41, entry no 121. Repository: Cory Library, MS 14 879-2. Transcribed by Lorraine Beechey and proof read by Richard Ball, from photographs by William Jervois and with the agreement of the Cory Library