(a bubbling spring) a mountain range on the eastern side of the plain of Esdraelon, rising over the city of Jezreel. Comp. (1 Samuel 28:4) with 1Sam 29:1 It is mentioned in Scripture only in connection with one event in Israelitish history, the defeat and death of Saul and Jonathan by the Philistines. (1 Samuel 31:11; 2 Samuel 1:6; 21:12; 1 Chronicles 10:1,8) Of the identity of Gilboa with the ridge which stretches eastward from the ruins of Jezreel no doubt can be entertained. The village is now called Jelbou.
Dictionary entry
GILBOA
Smith's Bible Dictionary