sentences:  Ivan Krypiakevych
  
  Ivan Krypiakevych (; 25 June 1886 – 21 April 1967) was a Ukrainian historian, academician, professor of Lviv University and director of the Institute of Social Sciences of Ukraine.He was a specialist on Ukrainian history of the 15th, 16th, and 17th centuries, writing extensively on the social history of western Ukraine and the political history of the Ukrainian Cossacks, especially during the time of Hetman Bohdan Khmelnytsky.