After Archelaus assumed the Cappadocian throne, his royal title, known from surviving inscriptions, particularly coinage, was: ,
Archelaus Philopatris Ktistes,
Archelaus, lover and founder of his country in Greek. In his early reign Archelaus married what is believed to be his first wife,
an unnamed princess from Armenia, who married
Cleopatra of Pontus, a daughter of Mithridates VI from his first wife,
his sister Laodice, thus Artavasdes II was a maternal grandson to Mithridates VI and Laodice. With his first wife, Archelaus had two children: a daughter called
Glaphyra through whom he had further descendants, and a son called
Archelaus of Cilicia. Archelaus was an ally to Antony, until his defeat at the
Battle of Actium in 31 BC, where Archelaus defected to
Octavian. By making peace with Octavian, Archelaus was able to retain his crown. When Octavian became the first
Roman Emperor Augustus, Archelaus became an important client monarch to Rome, and Augustus considered Archelaus loyal. Augustus had no commitment to provincialization as a matter of policy. In 25 BC, Augustus assigned Archelaus to rule
Cilicia Trachea, the harbor city of
Elaiussa Sebaste, as well as parts of the surrounding Cilician coast and
Armenia Minor.
Sebaste is the Greek equivalent word of the Latin word
Augusta. Archelaus renamed a village, Garsaura, to
Archelaïs, turning it into an administrative centre, which later became a colony under the Roman Emperor
Claudius. In appreciation, Herod reconciled Archelaus to the Roman Governor of
Syria. In 8 BC, the recently widowed Archelaus married
Pythodorida of Pontus, another Roman client monarch. Pythodorida had two sons and a daughter from her recently deceased first husband
Polemon I of Pontus. When Archelaus married Pythodorida, she and her family moved from the
Black Sea to Elaiussa Sebaste. Pythodorida remained with Archelaus until he died; they had no children. This marriage linked their kingdoms, and thus both monarchs had indirect control of their spouses' realms. Their marriage arrangement was doubtless orchestrated by Augustus in order to bind together the royal houses of Anatolia as surrogates for Roman suzerainty. ==Tiberius==