who was the writer?
Margaret Landon.
The King and I
. It is based on Margaret Landon's novel, "Anna and the King of Siam" (1944), 
who is hasekura tsunenaga? He was a kirishitan Japanese samurai and retainer of Date Masamune. what  does the latter mean? As a legendary warrior and leader, Masamune is a character in a number of Japanese period dramas. any drama containing the role of the mentioned character? Yes,  NHK series "Dokuganryū Masamune". which actor was casted for it? Ken Watanabe. what is his nationality? Japan. how did he begin his acting career? He made his Broadway debut in 'The King and I'. is it a movie? No, it's a musical. who composed it? Richard Rodgers. had it been adapted from any novel? Yes, Anna and the King of Siam.
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The King and I [SEP] Introduction
The King and I is the fifth musical by the team of composer Richard Rodgers and dramatist Oscar Hammerstein II. It is based on Margaret Landon's novel, "Anna and the King of Siam" (1944), which is in turn derived from the memoirs of Anna Leonowens, governess to the children of King Mongkut of Siam in the early 1860s. The musical's plot relates the experiences of Anna, a British schoolteacher hired as part of the King's drive to modernize his country. The relationship between the King and Anna is marked by conflict through much of the piece, as well as by a love to which neither can admit.