In his time, relations between the Armenians and the Franks (the Crusaders), two former allies, were not always as courteous as before: a major cause of dissension between them was the ownership of the strongholds of the southern Amanus, and on the neighboring coasts of the Gulf of Alexandretta.
[4] Leo was captured after being invited to a meeting by the Byzantine Emperor John II Comnenus, who had sworn a false promise of peace.
[2] Sometime between 1100 and 1103,[citation needed] Leo married[2] /Leo/ invited many famous warriors to join him, and allured them by great rewards.
He was the admiration of warriors, and the fear of foreigners or infidels, so that they called him the new Ashtahag.Other authors (e.g., Jacob G. Ghazarian, Vahan M. Kurkjian) suggest that Thoros I was directly succeeded by Leo.
They were soon allowed to live in the court under surveillance and John acted more honorably towards Leo, with the two dining and going on hunting parties together.