Nogai Khan
Hranislav is briefly referenced in national writer Ivan Vazov's 1907 novel "Svetoslav Terter". In one of the chapters, the book tells the story of Hranislav's fictional nephew Radoil, a brigand and adventurer who fought the Tatars of Nogai Khan and the Seljuks. In Vazov's novel, Hranislav is described as a famous hero from Ivaylo's time.