jehovah was made up by a Catholic monk by the name of Martini in the year 1270.
Odd how jw's say the bible is the word of God and we can rely on it but God was not able to keep His own name in it? strange. Awfully small God in that case. But the rest of the bible has not been tampered with? or has it? If God's name is so important don't you think He would make sure it was in the bible through history? If that has been tampered with and left out why should you believe any of the bible? How would it be possible to keep out one word of the bible in all the copies of scriptures in the world? not one ancient text was left untarnished? I don't think that is even mathematcally possible.
Re: the pronunciation- ever purposely pronounce a jw's name wrong each and every time you used their name? they get quite annoyed, and rightfully so. They may even ask you if you are purposely being obnoxious (which you are but ...) then ask them how they think God feels that they go around telling everybody they must pronounce His name in a certain manner because their very salvation is dependent on it. Their response? then they change the subject.