In 1219, after a failed attempt by Raymond-Roupen to claim the throne, Levon's daughter Zabel was proclaimed the new ruler of Cilician Armenia and placed under the regency of Adam of Baghras. Baghras was assassinated and the regency passed to Constantine of Baberon from the Het'umid dynasty, a very influential Armenian family. In order to fend off the Seljuk threat, Constantine sought an alliance with Bohemond IV of Antioch, and the marriage of Bohemond's son Philip to Queen Zabel sealed this; however, Philip was too "Latin" for the Armenians' taste, as he refused to abide by the precepts of the Armenian Church. In 1224, Philip was imprisoned in Sis for stealing the crown jewels of Armenia, and after several months of confinement, he was poisoned and killed. Zabel decided to embrace a monastic life in the city of Seleucia, but she was later forced to marry Constantine's son Het'um in 1226. Het'um became co-ruler as King Het'um I.