Whose head?

The beach below our slip has a lot of big stones on it. Launching and recovering the dingy can be a bumpy affair and a bit of a struggle as we haul it over the rocks. Our neighbour gave Ollie a huge lamb bone so while he was happily chewing away I had a shot at clearing away the biggest stones and levelling out the beach a bit. Found lots of little green shore crabs, nicely shaped and coloured stones, bits of broken pottery and glass and this chap's head!

Is he Bonny Prince Charlie?