I'll need some time to read all that, don't rush me...
ANCIENT HEBREW INSCRIPTIONS
A very interesting discussion of monuments found in Spain begins on page 22. In the year 1480 at Saguntum, Spain, "a Hebrew epitaph" of great antiquity was discovered. It reads, 'This is the grave of Adoniram, the servant of King Solomon, who came to collect the tribute, and died on the day...' (page 23) This Adoniram is mentioned in both I Kings 5:14 and 4:6, "and Adoniram the son of Abda was over the tribute." From this we understand that Adoniram was sent by Solomon to the Hebrew colony in Spain, where raw materials were collected for the Temple and other building projects in Palestine. This large stone sepulchre has been called, "the stone of Solomon's collector."
A second monument discovered in Spain with ancient Hebrew lettering, reads, "Raise with a bitter voice, a lamentation for the great prince; YAH has taken him. Amaziah." An old Hebrew book, called "Darcay Noam," or "Ways of Pleasantness," gives an account of this epitaph.
Pastor Margoliouth sums up this issue well in saying, "I see no reason for disbelieving that there were [Israelites] in Spain in the time of David and Solomon - startling as it may appear .. there existed colonies of Hebrews all over the world, in the reigns of David and Solomon..."
The evidence is in. The conclusion is obvious. Iarbanel was Jeremiah. Contrary to the doubting opinions of some, Jeremiah is mentioned in the Irish annals, under another name.
This of course is not the total answer to all the mystery surrounding Jeremiah in Ireland. The question of Ollam Fodhla, variously called a prophet and a king in Irish history, needs to be explored. There are also questions that need to be answered concerning King Zedekiah’s daughters allegedly taken to Ireland by Jeremiah, the identity of Eochaidh the Heremon, the whereabouts of the wondrous stone, harp, and ark which were also carried to Ireland by Jeremiah according to legend. But that is for further research and/or revelation.
For now, it needs only to be said that Jeremiah came to Ireland, as proven from Irish and Biblical history. His coming was part of the purpose of God for his people of Israel, a purpose ironically revealed every day, yet seen by few. Let us pray that with further research and revelation the few will one day become many.