Ceḍaga was one of the nine elected rājās ("rulers") of the Council of the Licchavi tribe, which was the supreme authority of the Licchavikas' gaṇasaṅgha (aristocratic republic) administration, of which he was the head.
Later, relations between Magadha and Licchavi permanently deteriorated as result of a grave offence committed by the Licchavikas towards the Māgadhī king Bimbisāra.
Eventually Licchavi supported a revolt against Ajātasattu by his younger step-brother and the governor of Aṅga, Vehalla, who was the son of Bimbisāra by another Licchavika wife of his, Cellaṇā, the daughter of Ceḍaga.
After the failure of this rebellion, Vehalla sought refuge at his grandfather's place in the Licchavika and Vajjika capital of Vesālī, following which Ajātasattu repeatedly attempted to negotiate with the Licchavikas-Vajjikas.
[1] His tribe nevertheless survived their defeat by Ajātasattu, and the structures of the older Licchavi republic continued with a degree of local autonomy under Māgadhī rule, as attested by how the Licchavika Council instituted a festival in the memory of the death of the Jain Tīrthaṅkara, Mahāvīra.