As for the crazy rumours of who his father might be, well come on - just have a look at this picture, check out his eyes, ,the brows and the stare, then compare to Prince Charles. There's no doubt to me of his parentage.
Hmm ... ... I'd say there's a far greater likeness to his grandfather, Prince Philip - apart from the latter's hair colouring - and [apparent] lifelong tendency towards being much thinner on top.