At the time of his death, Herod ruled over most of the South Western Levant, as a client-state of the Roman Empire. Antipas was not Herod's first choice of heir. That honor fell to Aristobulus and Alexander, Herod's sons by the Hasmonean princess Mariamne. It was only after they were executed (c. 7 BCE), and Herod's oldest son Antipater was convicted of trying to poison his father (5 BCE), that the now elderly Herod fell back on his youngest son Antipas, revising his will to make him heir. During his fatal illness in 4 BCE, Herod had yet another change of heart about the succession. According to the final version of his will, Antipas' elder brother Archelaus was now to become king of Judea, Idumea and Samaria, while Antipas would rule Galilee and Perea with the lesser function of tetrarch. Philip was to receive Gaulanitis (the Golan Heights), Batanaea (southern Syria), Trachonitis and Auranitis (Hauran).