"Roger of Salerno (or Roger of the Principate) (died June 28, 1119) was regent of the Principality of Antioch from 1112 to 1119.He was the son ...
of Richard of the Principate and the 2nd cousin of Tancred, Prince of Galilee, both participants on the First Crusade. He became regent of Antioch when Tancred died in 1112; the actual prince, Bohemund II, was still a child. Like Tancred, Roger was almost constantly at war with the nearby Muslim states such as Aleppo. 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." - (en.wikipedia.org 14.07.2020)
