Perez
The Talmud (Sotah 11b) points out that Kalev’s real name was, just like Hoshea’s, not the one given to us in the Torah. In I Chronicles 2 the descendants of Judah are recorded. He had five sons, the fourth of whom was Perez. Perez had two sons, Chetzron and Chamul. [Chetzron’s son Ram was the grandfather of Nachshon ben Amminadav, who «triggered» the parting of the Sea by entering the water — and Nachshon’s great-great-grandson was King David ben Yishai.]