Question: Who was the french conspirator who killed the last french monarch in 1574?
Sentence (from "Henry III of France"): Henry III (19 September 1551 – 2 August 1589; born "Alexandre Édouard de France", Polish: "Henryk Walezy" , Lithuanian: "Henrikas Valua" ) was King of the Polish-Lithuanian Commonwealth from 1573 to 1575 and King of France from 1574 until his death.
Relevant evidence: Yes