Next time you go to a Thai restaurant, look for a framed picture of a dark-haired, skinny, bespectacled guy with a well-decorated white military uniform. That's Bhumibol Adulyadej.
Yul Brynner became very famous for playing the ROLE of the King of Siam in a very famous Broadway play, The King and I, beginning in 1951. By that time, Bhumibol WAS the King of Siam, the REAL one. In fact, he is the longest-serving head of state in the world, having taken over in June 1946. That's 62 years at this writing. Yul Brynner, if you didn't know, is dead.