Smith's Bible Dictionary (1863)
(watchful).
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
ER (watchful), Judah's first-born, slain for his wickedness. Gen 38:3, Gen 38:6-7; Num 26:19; 1 Chr 2:3. A son of Shelah. 1 Chr 4:21. A name in the genealogical list of Christ. Luke 3:28.
Hitchcock's Bible Names (1869)
watchman