Casanova (n.)youdaoicibaDictYouDict[Casanova 词源字典]
"man of carnal adventures, connoisseur of seduction," 1888, from Giacomo Girolamo Casanova de Seignalt (1725-1798), the infamous debaucher. His name could be Englished as Jacob Jerome Newhouse, which is somewhat less romantic.[Casanova etymology, Casanova origin, 英语词源]