You might find the information you seek in any of the following pages:

• Tetragrammaton, a page about the history, religious significance and possible pronunciations (Jehovah, Yahweh) of the explicit name of God in Judaism and Christianity;
• The names of God in Judaism, a more general page discussing various names of God; or
• God, a general page not just about the name.

Alternatively you may be looking for

• Jehovah's Witnesses, a Christian religious denomination identified by the name since 1931.