He is of Dutch (Afrikaner) descent, along with smaller amounts (to varying degrees) of German, Swiss-German, Danish, and French, ancestry.
(On his costume in The Mummy) "I'm no Mr. Fitness, but I had done some exercise. When I finally got to London, they showed me my costume, and it was like the size of a postage stamp."
Shaved head
Boetie or Boeta
Pretoria, South Africa