JATHAN jā’ thən (̓Ιαθάν [BA], Ναθάν, G3719, [א]). Son of Shemaiah, and brother of Ananias; they were relatives of Tobit (Tobit 5:13; KJV Jonathas).

International Standard Bible Encyclopedia (1915)

For "Jonathas" in the King James Version, which is the Latin form for the Hebrew "Jonathan." Jonathan was brother of Ananias and "son of that great Sammaias" (Tobit 5:13).