Father Christmas is known as Santa Claus in Britain and is depicted as wearing long robes with holly in his hair. Children in the UK write letters to Father Christmas and place them in the fireplace so the smoke can carry them up the chimney to be read. According to an English story, the tradition of hanging stockings by the fireplace began when gold coins Father Christmas dropped fell into a stocking left out to dry. Carol singing at Christmas originated from medieval groups called "waits" traveling between houses to spread holiday cheer with ancient songs.