Who is Jamil al Soukori from The Haj and what is their importance?

Jamil is an older brother of Ismael's. Jamil tended to Ibrahim's horses. When the family is living in the camp at Aqbat Jabar, Jamil becomes one of the leaders of the Avenging Leopards. When Ibrahim has the convention in Bethlehem, the gang members provide security for the conference and are arrested by Colonel Zyyad. The gang members are held hostage while Ibrahim is in Zurich, and Jamil is tortured to death. The Jordanian cover story is that he was killed in a secret mission against the Israeli's. Jamil is the first martyr of Palestine.