Who is the author of the opera which had its English version translated by English composer Stephen Michael Harding Oliver?
Kuningas lähtee Ranskaan: Kuningas lähtee Ranskaan (English: The King Goes Forth to France ) is an opera in three acts by Aulis Sallinen, based on the novel of the same title by Paavo Haavikko, who also wrote the libretto. Kuningas lähtee Ranskaan:  The English singing version is by Stephen Oliver. Stephen Oliver (composer): Stephen Michael Harding Oliver (10 March 1950 – 29 April 1992) was an English composer, best known for his operas.
Paavo Haavikko