No...you're simply mistaken. God intended for the Israelites to cover the Earth [Amos 9:9]. Any tradition that would limit their location to such a small area is non-Christian.
Simeon WAS assimilated into Judah look at the map of Israel I posted above. Read the scripture, read WHERE Simeon's territory was. They were NOT in the north. Do you doubt scripture that says Simeon's territory was in Judah's?
There is nothing wrong with your map.....except it's about 700 years too early. Simeon WAS given land (1450 B.C.) within Judah [Joshua 19:9] but......When God caused the King of Assyria (721 B.C.) to take ALL Israel except Judah, [II Kings 17:18] after separating the ten tribes from Rehoboam to Jeroboam, Solomon's son [I Kings 11:31].....this event included the tribe of Simeon. You simply cannot dispute this scripture. It says what it says!
Scripture is not in error -- your misinterpretation is the error regarding Reuben merging into the similar culture of the Moabites. It states that ONE person was carried away, not an entire tribe.
Now for the benefit of those who may not....or are inclined not....to read everything up thread, I will recap.
My worthy adversary has said (post #35) that Reuben had been absorbed into the Moab/Edom culture and was a non entity at the time of exile (721 B.C.). He reiterated in post #42 that Reuben had been diluted into other cultures and was never heard from again after the first few kings post David and Solomon (900 B.C.)....and he repeated this same assertion in post #50.
In post #57 he is still claiming this absurdity after being shown scripture refuting his theory! Then is post #90, after being given more scriptural proof, he again makes the same silly assertion: "Reuben had been dissolved as a culture and this "Prince of the Reubenites", Beerah, was the only one taken to Assyria.
Well folks.....this is what the Good Book says about that! [1 Chronicles 5:6] Beerah his son, whom Tilgathpilneser king of Assyria carried away captive: he was prince of the Reubenites. Now please follow this logic: If Beerah was a prince of Reuben it would seem that he was a very old prince.....maybe 200 years or so? We have been told (by Cronos) that the tribe of Reuben had never been heard from again after the first few Kings....or so....because they were absorbed into Moab. We have not been given any scripture stating this. We are instructed to look at a map that shows Reuben abutting Moab and simply told that Reuben was no more! They were now Moabites!
[I Chronicles 5:26] And the God of Israel stirred up the spirit of Pul king of Assyria, and the spirit of Tilgathpilneser king of Assyria, and he carried them away, even the Reubenites, and the Gadites, and the half tribe of Manasseh, and brought them unto Halah, and Habor, and Hara, and to the river Gozan, unto this day.
Dear friends....the Assyrians began carrying away the ten tribes (Simeon and Reuben included) about 725/735 B.C. and began in earnest about 721 B.C. Scripture explicitly says that the tribe of Reuben was among them! Many Israelites of the north had moved to the south (Judah) between the separation of the two kingdoms (931 B.C.) and the time of the Assyrian deportation (721 B.C.). You will find that here: [2 Chronicles 11:13-17] And the priests and the Levites that were in all Israel resorted to him out of all their coasts. For the Levites left their suburbs and their possession, and came to Judah and Jerusalem: for Jeroboam and his sons had cast them off from executing the priest's office unto the LORD: And he ordained him priests for the high places, and for the devils, and for the calves which he had made. And after them out of all the tribes of Israel such as set their hearts to seek the LORD God of Israel came to Jerusalem, to sacrifice unto the LORD God of their fathers. So they strengthened the kingdom of Judah, and made Rehoboam the son of Solomon strong, three years: for three years they walked in the way of David and Solomon. These folks became citizens of Judah and became known as Jews. The folks who stayed in the north maintained the appellation of Israelite and were all carried away in captivity to Assyria in the early 700's B.C.
Now....if you really want to carry on with these silly claims....be my guest. You'll do it on your own.
If you believe that the northern Israelites after being moved by the Assyrians somehow became Cimmerians and Celts and moved to England, then yes, you would be a British Israelite.
I don't believe I have made this claim. The reason I don't believe I have done so is because I don't believe it!