Mikhail Afanasyevich Bulgakov ( buul-GAH-kof; Russian: Михаил Афанасьевич Булгаков, IPA: [mʲɪxɐˈil ɐfɐˈnasʲjɪvʲɪdʑ bʊlˈɡakəf]; 15 May [O.S. 3 May] 1891 – 10 March 1940) was a Soviet novelist and playwright of Russian origin. His novel The Master and Margarita, published posthumously, has been called one of the masterpieces of the 20th century. He also wrote the novel The White Guard and the plays Ivan Vasilievich, Flight (also called The Run), and The Days of the Turbins.
https://en.wikipedia.org/wiki/Mikhail_Bulgakov