The son o Vasak IV, Sembat, that receivit the fiefdom frae Vayots Dzor. Chahaponk (Jahuk) govrened frae 887 till sometime efter 920. He revoltit in 903 against the Bagratid Sembat I, refusin tae pay him taxes. Acause o this, he wis assaultit bi the prince o Vaspurakan, Sargis-Ashot. Sembat submittit, wis forgiven an marriet tae the sister o the prince o Vaspurakan, receivin the ceety an destrict o Nakhchivan, which in 902 wis upset wi the Kaysites or Qaisids.