It's gets confusing here. At the risk of oversimplifying: there are many Greeks who believe Macedonia is inseparable from Greek culture and did not consider "Macedonia" legitimate.
nytimes.com/2019/05/05/wor…
en.wikipedia.org/wiki/Peloponne…
I can't find one Greek source linking him to the dictator. Surely at least one Greek reporter was curious enough to check his family history to see if he was related.
There was a lot of CIA activities in the Congo, so that's intriguing.