Which 1956 musical film starring Yul Brynner and Deborah Kerr is set in 1860s Siam?

The 1956 musical film starring Yul Brynner and Deborah Kerr and set in 1860s Siam is The King and I.

Directed by Walter Lang, the film adapts the Rodgers and Hammerstein stage musical, which was inspired by Margaret Landon’s novel Anna and the King of Siam. That novel drew on the memoirs of Anna Leonowens, who taught the children of Siamese King Mongkut in the early 1860s. The film dramatizes the cultural clashes and growing mutual respect between Anna and the king.

Yul Brynner reprised his celebrated stage role and won the Academy Award for Best Actor. Deborah Kerr played Anna, but her singing was dubbed by Marni Nixon. The film was nominated for nine Oscars and won five. Carousel, South Pacific, and Oklahoma! are also famous Rodgers and Hammerstein musicals, but none matches this story or cast.