And when Azubah was dead, Caleb took unto him Ephrath
The Targum is, "Miriam, who was called Ephrath"; but, according to Josephus F17, it was his son Hur that was the husband of Miriam the sister of Moses:
which bare him Hur; (See Gill on Exodus 17:10).
F17 Antiqu. l. 3. c. 2.