I have read that the samaritan pronunciation eludes to Yahweh being most accurate, using the vowels from their pronunciation 'Jabe' A E.
The Samaritans had a temple on Mt. Gerizim and claimed, and still do claim, they follow the God of the Israelites as found in the Torah. Unfortunately the temple was conquered and dedicated to the Greek Zeus.
Jupiter (Deus Pater) is the Latin for Zeus. Jupiter's more ancient name in Latin is Jove. And... Jove was pronounced back then in Latin as JAW-WAY. When the Romans took control of Jerusalem a temple to Zeus Olympus was dedicated on the temple mount.
It is very typical of Latin names to transliterate Hebrew masculine names ending in AH as AY, for example Josue is Latin for Yehoshua (our English Joshua).
If Josue is from Yehoshua, you can see how Jove is from Yehowah.
The name Jehovah is no more an invention than Jehoshua, Jehoshaphat, Jehoadah, Jehoaddan, Jehoahaz, Jehoash, Jehohanan, Jehoiada, Jehoiakim, Jehoiarib, Jehonadab, Jehonathan, Jehoram, Jehosheba, Jehozabad, Jehozadak, or for that matter, Jehu, Jehubbah, Jehucal, Jehud, Jehudi, Jehudijah, Jehush, not to mention the names that end in -jah from -yahu.