Kitto's Popular Cyclopedia of Biblial Literature
Ad´ad is the name of the chief deity of the Syrians, the sun. The name of this Syrian deity is most probably an element in the names of the Syrian kings Benhadad and Hadadezer.
Kitto, John, ed. Entry for 'Adad'. "Kitto's Popular Cyclopedia of Biblial Literature". https://www.studylight.org/encyclopedias/eng/kbe/a/adad.html.