In the Battle of the White Umfolozi, the Voortrekker commando is ambushed and nearly overpowered by a Zulu impi. Alexander Harv

Muller, C.F.J. (ed)(1981). Five Hundred years: a history of South Africa; 3rd rev. ed., Pretoria: Academica, p. 167 | Kruger, D.W. (ed)(1972). Dictionary of South African Biography, Cape Town: Human Sciences Research Council, v. 1, p. 73.