\Messiah son of Joseph, An Important Rabbinical Source
The Hatam Sofer on the Ten Tribes and Messiah son of Joseph
Rabbi Moses Sofer, (1762-1839), is known by his main work "Chatam Sofer." He was one of the leading Orthodox rabbis of all time. His works are frequently referred to.
We saw, in a previous article, how according to traditions related by the Hatam Sofer the future land of Israel will encompass parts of Western Europe as well as Britain and the Atlantic Ocean area, possibly intending North America.
See:
"Predicted Hebrew Islands. Were the British Isles and North America Promised to Become Israelite?"
https://hebrewnations.com/articles/rabbi/sofer.html
Atlantic Britain
https://hebrewnations.com/articles/rabbi/atlantic.html
Other sources from the Hatam Sofer refer to the Ten Tribes and the future Messiah son of Joseph as head of the Ten Tribes just before their re-union with Judah.
1. Ten Tribes, Jews, Keeping the Commandments.
Pataphrased:
We need to believe in the Future Redemption. The Jews must always observe the Torah and keep the commandments no matter what.
The Hatam Sofer seems to refer to the opinion that the Ten Tribes in our time are not obligated by the Commandments. He doubts this. He remarks that at all events the Jew can never apply this principle to themselves but must always keep the Torah (no matter what happens) and believe in the Future Redemption.
(Hatam Sofer, "Shulchan Aruch, Yoreh Deah, part 2, Responsa 236").
2. Quotation.
# Concerning the Messiah son of Yosef: The Kingdom of David had been divided. The Messiah son of Yosef will be king over the Ten Tribes referred to in the Prophets as the House of Joseph. A King will arise from the descendants of Joseph. He will fight the Wars of the LORD. In the end he will be killed in War. He will be succeeded by the Messiah son of David. The Messiah son of David will have a complete kingdom over all Israel as its says "they will be one stick in your hand" (Ezekiel 37:17). The death of Messiah son of Joseph will have atoned for the separation [in the past, of the Ten Tribes] from the House of David. # (Hatam Softer Responsa, Part 6, s. 98).
The Hatam Sofer goes on to speak about the Wars of Gog and Magog, the renewal of Prophecy, the Days of the Messiah, etc.
(Hatam Sofer, Anthology, part 6, s.98)