Hamilton Who? I know. I had the same reaction, too. But Mr. Naki was Dr Barnard's (as in Dr Christiaan Barnard, the guy who did the first heart transplant on a human being) right hand man. Dr. Barnard himself apparently said something to the effect that Hamilton Naki was more technically skilled. During the terrible years of Apartheid, however, Mr Naki's title was gardener, instead of anaesthetist, or surgeon. And he's living on a gardener's pension even as we speak.
Hey, maybe if we dig deep enough.... Hmmm... Does anyone know if Einstein had a gardener?
Read about Mr Naki and his work in this BBC article, as well as this Guardian Unlimited article.