James of Ibelin (French: Jacques d'Ibelin; died in 1276) was count of Jaffa and, titularly, of Ascalon too as well as a noted jurist in the Kingdom of Jerusalem.
James was the son of Count John of Jaffa and Ascalon, himself a noted jurist in the crusader kingdom.
[4] In their deposition to the English prince Edward Longshanks, who acted as arbiter,[1] the knights insisted that they did not owe military service to the king on the mainland.
[5] Unlike John decades earlier, James and the knights had no vested interest in fighting on the mainland because most of their possessions there had been lost.
"[1] James thus became the first member of the Ibelin family to challenge the power of the Lusignan kings of Jerusalem and Cyprus.