Easton's Bible Dictionary (1897)
(Isa. 10:9; 36:19; 37:13), also Arphad, support, a Syrian city near Hamath, along with which it is invariably mentioned (2 Kings 19:13; 18:34; Isa. 10:9), and Damascus (Jer. 49:23). C. 742) before the Assyrian king Tiglath-pileser II. Now Tell Erfud.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
AR'PAD, or AR'PHAD (strong city), a town or region in Syria. near Hamath, 2 Kgs 18:34; Isa 10:9; dependent on Damascus. Jer 49:23. See Arvad.
Hitchcock's Bible Names (1869)
the light of redemption