Udayabhadra

Udayin (reigned -444 BCE or 373-357 BCE) also known as Udayabhadra was a king of Magadha in ancient India. According to the Buddhist and Jain accounts, he was the son and successor of the Haryanka king Ajatashatru. Udayin laid the foundation of the city of Pataliputra at the confluence of two rivers, the Son and the Ganges. He shifted his capital from Rajagriha to Pataliputra due to the latter's central location in the empire.

== Ancestry == According to the Buddhist accounts, the successors of the Magadha ruler Bimbisara were Ajatashatru, Udayabhadra (Udayin), Anuruddha, Munda and Nagadasaka. The Jain tradition mentions Udayin as the son and successor of Ajatashatru. Kings Bimbisara (), Ajatashatru (–460 BCE), and Udayin (–440 BCE) of the Haryanka dynasty were patrons of Jainism. However, the Puranas name the successors of Bimbisara as Ajatashatru, Darshaka, Udayin, Nandivardhana and Mahanandin. The Matsya Purana names Vamsaka as the successor of Ajatashatru. Since the Puranas were composed at a later date, the Buddhist traditions seems to be more reliable. The Nagadasaka of the Buddhist chronicles is identified with the "Darshaka" of the Puranas.