Paraphrasing something recently made by a peddler of “The Holy Blood and the Holy Grail”.

“The suggestion of a Monarchy being founded on the Rock of Sion was first promulgated by René Grousset in his book, The Epic of The Crusades, 1970; where it was concluded that such a monarchy was created by Baldwin of Boulogne, brother of Godfrey. Baldwin built a kingdom based on the Rock of Sion, symbolising the divine Monarchy of David and Solomon. Baldwin linked himself to King David and King Solomon”.

All that needs to be said here is that archaeologists reject the claims of the Old Testament about King David and King Solomon – simply because the stories are not supported by archaeological evidence. The stories about the two Kings as found in the Old Testament are nothing more than stories and traditions.

The discovery of the Tel Dan Stele fragmentary inscription in 1993 and 1994 – giving a Canaanite inscription dating back from the 9th century BCE – refers to a House of David. But the event it refers to does not corroborate what's in the Old Testament; but rather contradicts it.

Also, so much for the claims about the Line of David and the Jesus & Mary Magdalene Bloodline given in “The Holy Blood and The Holy Grail” – a book that cannot be treated seriously – because that book too treats the stories of King David and King Solomon in the Old Testament as “historically factual”.

According to the tradition of the Jewish Kings as given in the Old Testament – the last of the Line of David was dethroned in 586 BCE when the Babylonians conquered Jerusalem and took away the Jewish people to captivity. When the Jews were liberated from Babylon by Persia and returned to Jerusalem the Jewish Monarchy of the Line of David was not restored. There simply wasn't anybody then in existence to be the King of Judaea from the Line of David (The figure of Zerubbabel, claimed to be of the Line of David, was most likely a nebulous and speculative figure to try out the possibility of the restoration of Kingship, but Kingship was ultimately rejected when the Jewish people returned to Judea). The later Maccabean/Hasmonean Monarchy, that led a successful revolt against Seleucid occupation, claimed to be of the Tribe of Levi.

Quoting from the Old Testament about the Babylonian occupation of Judea:

“And they slew the sons of Zedekiah before his eyes, and put out the eyes of Zedekiah, and bound him with fetters of brass, and carried him to Babylon” (2 Kings 25: 7).