MEANING: This name derives from the Hebrew “Mənaššé > menashsheh”, meaning “causing to forget”. 1) The eldest son of Joseph and progenitor of the tribe of Manasseh. ... 1C) The territory occupied by the tribe of Manasseh. 2) Son of king Hezekiah of Judah; he was the immediate and direct cause for the exile.
Jewish: from the Biblical male personal name Menashe (Hebrew form; see Manasse).
The meaning of the name Lethia is Forgetfulness. The origin of the name Lethia is Greek.