The 'I' of 'The King and I' is ANNA, a character from the 1951 musical of the same name. The musical is based on the 1944 novel ANNA and the King of Siam by Margaret Landon, which tells the story of ANNA Leonowens, an English schoolteacher who is hired to teach the children of the King of Siam in the 1860s. ANNA is a strong-willed and independent woman who stands up for herself and her beliefs in the face of adversity.