Can you show how you arrived at the word 'Judge'? I've never seen that explanation before.
Here is the origin of the word Judah, according to the Jews:
...
The words Jew (Yehudi in Hebrew) and Judaism (Yahadut) come from the name Judah, or Yehuda as it is pronounced in Hebrew. Yehuda was one the 12 tribes that descended from our forefather Yaakov. Understanding who Yehuda was and what he represented provides us with the key to comprehending the name Jew and understanding who we really are.
The word Yehuda comes from the Hebrew word
lehodot, which means to thank. Indeed, upon his birth, Leah, Yehuda's mother, exclaimed "
hapaam odeh et Hashem," this time I thank God. Feelings of gratitude characterized Yehuda's birth. The commonly used word
todah, meaning "thank you," stems from the same root.
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full text at
http://www.aish.com/sp/ph/48955566.html