What do the DNA studies say?
I've read considerable evidence of such. Jeremiah's . . . daughter? some such.
You mean Tia Tephi. British Israelism (theory = the ten lost tribes migrated north and west to become British/Irish/Scottish/North Americans) thinks so. However interesting as some aspects may be - such as the many "Dans" of the region, like Danube River etc - they lose me in the scriptural "evidence," such as their claim that Jeremiah was father to a princess of Israel, especially considering that God told him specifically that he was not to take a wife (Jer 16:2).
However, I do firmly believe that the ten lost tribes are out there, that God knows who they are (Amos 9:9), and that they will be regathered into Israel as He promised so very many places in scripture. He said he would "save the tents of Judah first" (Zech 12:7), which is what has been happening for about a hundred years now - the house of Judah returning to the land. The house of Israel, however, has yet to be restored and joined with Judah to become one stick (Ez 37).