The meaning of Thaddaeus in the Bible
(From Easton's Bible Dictionary)
breast, the name of one of the apostles (Mark 3:18), called "Lebbaeus" in Matthew 10:3, and in Luke 6:16, "Judas the brother of James;" while (John 14:22), probably referring to the same person, speaks of "Judas, not Iscariot." These different names all designate the same person, viz., Jude or Judas, the author of the epistle.
See more on the meaning of Thaddaeus in the Bible:
Thaddaeus {International Standard Bible Encyclopedia}
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