Not sure what the question is, but answering it as asked: Yes. # Jehovah. EXODUS 3:15, NWT -- Then God said once more to Moses: "This is what you are to say to the sons of Israel, 'Jehovah the God of your forefathers, the God of Abraham, the God of Isaac and the God of Jacob, has sent me to you.' This is my name to time indefinite, and this is the memorial of me to generation after generation."
Jehovah is a name for God. Catholics believe in God. They just don't generally use Jehovah as a name for God, but it is the same God. So yes, you could say that Catholics believe in Jehovah.
"Jehovah" is the name of God. No one invented him.
Jehovah-jireh: God is my provider. Jehovah nissi: God is our banner. http://www.evangelbaptist.org/highschool/lessons/law/names_bookmark.htm
Jah is a shortened, poetic form of Jehovah, God's name.
Jehovah is the name of the Creator; He is the Almighty God according to Psalm 83:18 in the Bible. LORD and GOD are titles, not His name. According to the Bible, God’s name is Jehovah (in the English language).
Jehovah
"JEHOVAH"
The original hebrew scriptures contained the name that is translated to Jehovah 6,973 times. I am not entirely sure where that particular interpretation of the Bible kept god's name. Here is a list of verses that contain the name Jehovah, you can check to see if Jehovah was left in that bible Psalms 83:18 Isaiah 25:1 Isaiah 28:5 Isaiah 30:15 This is just a short list of bible verses with the name Jehovah.
Dave Jehovah
This is the name of the God of the Bible.
Jehovah is God
Jehovah