Question: What is the date of death of Katarina Zrinska's husband?
Sentence (from "Katarina Zrinska"): Katarina Zrinski and the conspiracy were largely forgotten until the 1860s, when Croatian politician Ante Starčević began a campaign to rehabilitate the Zrinski and Frankopan nobility, and the story of her life and death was widely popularised following the publishing of Eugen Kumičić's historical novel "Urota Zrinsko-Frankopanska"  in 1893.
Relevant evidence: No