Jehovah

Jehovah is an English transcription of יְהֹוָה, which is a specific vocalized spelling of יהוה (i.e. the Tetragrammaton) that is found in the Masoretic Text.
יְהֹוָה has the consonants of the Tetragrammaton, and יְהֹוָה 's vowel points are similar to, but not precisely the same as the vowel points found in Adonai.
יְהֹוָה are the actual vowel points of God's name. Some scholarly sources teach that יְהֹוָה has the vowel points of אֲדֹנָייְהֹוָה does not have the precise same vowel points as Adonai has.
The first English translators of יְהֹוָה, believed they had the correct vowel points, and translated it as it was written:

Many religious followings, including Catholics and Orthodox Christians have been using the name Jehovah during the last 2 centuries. King-James-Only Movement Christians believe that Jehovah is the correct name that English-speaking people shall use for God. Followers of the Watchtower movement Jehovah's Witnesses, (previously known as International Bible Students until 1931) have been using the name throughout the world as the most commonly spoken English pronunciation of the Tetragrammaton. Latter-day Saints believe that Jehovah was the name of the pre-mortal Jesus Christ, and that he is a distinct being from God the Father, whom Latter-day Saints sometimes refer to as Elohim.