Jean married Antonia of Savoy, illegitimate daughter of the Duke of Savoy and his mistress Libera Portoneri, in 1486. They had a daughter named Marie.[1]
He was murdered by his brother Lucien, who then became Lord of Monaco.[2]
References
^Bernardy, Françoise de (1961). The Princes of Monaco (English ed.). London: Arthur Barker Ltd.
^Bourgne, Marc; Shackleton, Anthea (November 1997). The History of Monaco (Illustrated ed.). Dargaud.