Gershon Gold answered the related question Was Caleb a foreigner (Non-Isralite)?
Divrei Hayomim 2:18 says that Caleb was the son of Chetzron. Radak
there says that this is Caleb ben Yefune. Radak says he was known as
ben Yefune since he turned away from the Meraglim's blasphemy of the
Ibn Ezra disagrees and says his father's name was Yefune and his
grandfather's name was Kenaz.
So we have the view of the Ibn Ezra.
Wikipedia acknowledges two people: Caleb, son of Jephunneh and Caleb, son of Hezron.
Caleb, son of Jephunneh (Numbers 13:6) is not to be confused with
Caleb, great-grandson of Judah through Tamar (1 Chronicles 2:3-9).
This other Caleb was the son of Hezron, and his wife was Azubah (I
Josh Waxman in his parshablog maintains that contradictions between Divrei Hayomim and the rest of Tanach are resolved at the level of derash and therefore
...on the level of peshat, we need not say that this is the same
Calev, even though both are from the tribe of Yehuda.