In 1114 there was an earthquake that destroyed many of the fortifications of the principality, and Roger took great care to rebuild them, especially those near the frontier.
With Joscelin I of Edessa, Roger put enough military pressure on Aleppo that the city allied with Ortoqid emir Ilghazi in 1118.
[3] Ilghazi invaded the Principality in 1119, and despite the urging of the Patriarch, Roger did not wait for reinforcements from Jerusalem or Tripoli.
He married Cecilia of Le Bourcq, daughter of Hugh I, Count of Rethel and sister of Baldwin II.
Prince Roger was in fact the first ruler in the Christian world to depict the Miracle of Saint George and the Dragon on his coinage.