Jur Bohun (also Yuri Bogun) is the main antagonist in the novel "With Fire and Sword" by Henryk Sienkiewicz. He is a famous Cossack colonel of unknown origin, and originally a friend (more like an adopted son) of the Kurcewicz family. He falls in love with Helena Kurcewiczówna and wants to marry her. However he is thwarted by his rival, Jan Skrzetuski, a Polish nobleman, who forces the matron, Princes Kurcewicz to promise him Helena's hand, with Helena's approval. Betrayed and rejected Bohun raids the Kurcewicz estate, slaughters the family, kidnaps Helena and joins the ongoing Cossack uprising. The novel revolves around the struggle between Skrzetuski and Bohun with the Khmelnytsky Uprising as historical background.