Simon Thassi (Hebrew: Šiməōn HaṮasī; died 135 BCE)[1] was the second son of Mattathias and thus a member of the Hasmonean family. The name "Thassi" has a connotation of "the Wise", a title that can also mean "the Director", "the Guide", "the Man of Counsel", and "the Zealous".[2][3]