Like Micha-el, Rapha-el, Uri-el, Uzi-el, Gabri-el, and other, similar Hebrew names...
Also, the combination of "Lan+th" isn't the start of any name in Hebrew; like, at all, ever.
Not a thing in men's names in Hebrew.
Which isn't a complaint, or anything; I think it was mentioned when we first met Lance-Baruq that his name was all wonky, and entirely non-Hebraic.
Non-Semitic? Un-Kosher? Maybe his name is Taraf...?
Anyway.
Based on its location, one would think that they would be remnant-tribes of Israel; Rueben, Manassah, and perhaps Efraim? Or perhaps they are just Hebrew? They really couldn't be "Jews," as there wasn't any talk of Temples being destroyed... though during a time slightly before this, there were Hebrew Temples in multiple cities due to tribal factionalism eventually leading to the land being called Judea, and the inhabitants eventually being called "Jews," but... that is only after a final diaspora and the... Second? ...Third destruction? Well, at this time, the Utter and Final Destruction of the Temple.
So, really, they're currently Israelites (ish) of El-Shaddai.
Or so it seems to me, anyway.