“Ephraim’s daughter was Sheerah, who built both Lower and Upper Beth-horon as well as Uzzen-sheerah. Rephah was his son, Resheph his son, Telah his son, Tahan his son, Ladan his son, Ammihud his son, Elishama his son, Nun his son, Joshua his son.”
This genealogy is trying to get to Joshua son of Nun. I am not sure if there is enough generations to get there. Sheerah is a daughter of Ephraim who is never mentioned elsewhere. Neither is Uzzen-sheerah found elsewhere. Lower and Upper Beth-horon are in the northwest corner of Benjamin, about 10 miles northwest of Jerusalem, where a famous battle took place under Joshua, chapter 10. This would assume that the Ephraimites were in Canaan before the conquests of Joshua. (1) Rephah, (2) Resheph, and (3) Telah are only mentioned here, nowhere else. This (4) Tahan was a name mentioned earlier. There was a Levite (5) Ladan also. (7) Elishama and his father (6) Ammihud were mentioned as the leaders of the Ephraimites in Numbers, chapters 1, 2, 7, and 10. Of course, (9) Joshua and his father (8) Nun are frequently mentioned in the Exodus story and the book of Joshua, over 200 times. It took 9 generations to get from Ephraim to Joshua, 1 generation after Moses, while it only took 3 generations to get from Levi to Moses, 1 generation older than Joshua.