Wanted Help needed to find previous bike owner

Hello Dogs, I'm appealing to the hive mind, in trying to register my "new to me" KTM 500. The fella I bought it from didn't license it on NATIS, so it's still on the name of the Original owner. I'm trying to make contact with him to ask him whether he could assist me in getting things sorted.Its a lot simpler than police clearance etc etc. His name is JJ Gray, from Menlo Park Pretoria. Any help in making contact with him, would be much appreciated.