Arad
From the Catholic Encyclopedia
A titular see of Palestine, said to be identical with the eminence of Tell' Arad on the way from Petra to Hebron (cf. Numbers 21:1; Judges 1:16). Its episcopal list is given in Le Quien.
LE QUIEN, Oriens Christ. (1740), IIl, 777-780; SMITH, Dict. of Greek and Roman Geogr., I, s.v.