The Spirit of Yahweh came on him, and he judged Israel; and he went out to war, and Yahweh delivered Cushan Rishathaim king of Mesopotamia into his hand: and his hand prevailed against Cushan Rishathaim.
So Othniel was the fellow who married Caleb's daughter. Remember he took the city Kirjath there near Hebron and so Othniel became the first judge over Israel.