During the First Crusade the Normans had quarrelled with the Provencals, but Pons healed this rift by marrying Cecile of France, the widow of Tancred of Hauteville and the daughter of Philip I of France.
In 1118 he allied with Baldwin II, the new king of Jerusalem, and in 1119 the two marched north to aid Roger of Salerno against an invasion by Ilghazi. Roger decided not to wait for them, and he and his army was slaughtered at the Battle of Ager Sanguinis; Baldwin II was later taken hostage.
In 1124, after Baldwin had been released, Pons helped capture Tyre, one of the last coastal cities remaining in Muslim hands. In 1125 he aided in the Crusader victory at the Battle of Azaz. In 1131 Pons came into conflict with Fulk of Jerusalem, who had ascended to the throne that year, and was defeated at the Battle of Rugia.
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