In the premiere of The Merchant Kalashnikov, Tsar Ivan IV was played by Thodore Strawinsky (the father of Igor Stravinsky), and Alyona Dmitriyevna, Kalashnikov's wife, was played by Wilhelmina Raab.
Tsar Ivan IV Fyodor Stravinsky 
He was the father of Igor Stravinsky and the grandfather of Theodore Strawinsky and Soulima Stravinsky. 
