Arunaraja dating history

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Aruṇarāja (Thai: อรุณราช, RTGS: Arunnarat), also rendered as Aruṇa Kumāra (Thai: อรุณกุมาร, RTGS: Arunnakuman) and traditionally identified as Phra Ruang I (Thai: พระร่วงที่ 1),  was a mixed Mon–Tai monarch recorded in the Northern Chronicle as a ruler of both Mueang Chaliang (Si Satchanalai) and Sukhothai. He was born to King Abhayakāminī of Sukhothai—who was of Mon descent from Haripuñjaya—and Nang Nak, a Tai consort from Nan of Ngoenyang. Around the mid-950s CE, Aruṇarāja, at the age of 40, was appointed by his father to govern Mueang Chaliang through marriage to the princess of the preceding ruler, Sudhammaraja, who had no male heir. Following the death of his father’s successor, Sricandradhipati, who likewise left no heir, Aruṇarāja assumed the throne of Sukhothai, thereby consolidating the two polities under his authority.