(Κοστόβαρος ).
1. An Idumaean of honorable connections, married by Herod to his sister Salome, and appointed governor of Idumaea, but afterwards renounced by her on pretext of his favoring the escape of the sons of Babas, the last scions of the Hyrcanian dynasty, and eventually slain by Herod (Josephus, Ant. 15:7, 8-10).
2. A relative of Agrippa, and a ringleader of the Sicarii in their excesses at Jerusalem (Josephus, War, 20:9, 4).