Mandla Mandela, who is also a traditional chief in the Eastern Cape village of Mvezo where his famous grandfather was born, will face sentencing at a date yet to be announced.
Prosecutors had charged Mandla Mandela with assault and brandishing a gun at another man. South African media said at the time the younger Mandela was reported to have drawn a gun on a 44-year-old teacher whose vehicle had collided with one driven by a guest of Mandla Mandela's.
The teacher later had to undergo emergency surgery to remove a blood clot from his brain, newspapers said.
Mandla Mandela made headlines earlier in 2013 when a judge ordered him to return the remains of three of Nelson Mandela's children - including those of his father - from a memorial centre dedicated to his grandfather where he had moved them two years before. Mandla had been sued by more than a dozen of Mandela's relatives who wanted the remains returned.
--reuters--