Back Julio Caesar Czech Julius d’Austria German Δον Ιούλιος Καίσαρ της Αυστρίας Greek Julio César de Austria Spanish Ausztriai Julius Caesar Hungarian Giulio Cesare d'Austria Italian Julius d’Austria Polish Юлий Цезарь Австрийский Russian
Don Julius Caesar d'Austria (1584 or 1585—25 June 1609) was the oldest illegitimate son of Holy Roman Emperor Rudolf II and his long-term mistress, Catherina Strada. Don Julius had schizophrenia and died while he was serving a life sentence in prison after the murder of his lover Markéta Pichlerová in 1608.