The lords of Toron tended to be very influential in the kingdom; Humphrey II was constable of Jerusalem. Humphrey IV was married to Isabella, King Amalric I's daughter (Toron passed into the "royal domain" during their marriage but its title was returned to Humphrey IV after their divorce). It was also one of the few to have a straight hereditary succession in the male line, at least for a few generations. The lords of Toron were also connected to the Lordship of Oultrejourdain by the marriage of Humphrey III and the maternal inheritance of Humphrey IV. Toron was later merged with the royal domain of Tyre, which went to a branch of Antioch, then their heirs from Montfort.