In this internet age, there are numerous theories being suggested for the name of God. Here is what our forefathers had to say on the subject.
We have been taught and are convinced and do believe that [God] accepts those only who imitate the excellences which reside in him—temperance, justice, and philanthropy—and as many virtues as are peculiar to a God who is called by no proper name. (First Apology 10)
There is pronounced over the the person who chooses to be born again [context is baptism, see Water Baptism Quotes], and who has repented of their sins, the name of God, the Father and Lord of the universe. He who leads the person that is to be washed to the laver calls God by this name alone. For no one can utter the name of the ineffable [i.e., unable to be named] God, and if anyone dares to say that there is a name, he raves with a hopeless madness. … The one who is illuminated is also washed in the name of Jesus Christ … and in the name of the Holy Spirit. (First Apology 61)
Great home school video with reenactments of the Dover trial on Intelligent Design.