No need to panic. It's no one related to Llewellyn's the popular local chain of Welsh pubs. (At least I hope not.)No, the deceased is Sir Dai Llewellyn, legendary British playboy and a dead ringer for Thurston Howell III from Gilligan's Island.From his amazing obit in the Daily Telegraph:"Sir Dai Llewellyn, 4th Bt, who died on Tuesday aged 62, became famous as a playboy, bon viveur and darling of the gossip columns, his reputation reflected in soubriquets such as "Seducer of the Valleys", "Conqu