5 occurrences in 5 dictionaries
Reference: Ardon
Easton
descendant, the last of the three sons of Caleb by his first wife Azubah (1Ch 2:18).
Morish
Ar'don
Son of Caleb, son of Hezron. 1Ch 2:18.
Smith
Ar'don
(fugitive) a Son of Caleb, the son of Hezron, by his wife Azubah.
1Ch 2:18