The Pandyan dynasty, also referred to as the Pandyas of Madurai, was an ancient Tamil dynasty of South India, and among the three great kingdoms of Tamilakam, the other two being the Cholas and the Cheras. Existing since at least the 4th to 3rd centuries BCE, the dynasty passed through two periods of imperial dominance, the 6th to 10th centuries CE, and under the 'Later Pandyas' (13th to 14th centuries CE). The Pandyas ruled extensive territories, at times including regions of present-day South India and northern Sri Lanka through vassal states subject to Madurai. The rulers of the three Tamil dynasties were referred to as the "three crowned rulers (the mu-ventar) of the Tamil country". The origin and the timeline of the Pandya dynasty are difficult to establish. The early Pandya chieftains ruled their country (Pandya Nadu) from the ancient period, which included the inland city of Madurai and the southern port of Korkai. The Pandyas are celebrated in the earliest available Tamil poetry (Sangam literature"). Graeco-Roman accounts (as early as 4th century BCE), the edicts of Maurya emperor Ashoka, coins with legends in Tamil-Brahmi script, and Tamil-Brahmi inscriptions suggest the continuity of the Pandya dynasty from the 3rd century BCE to the early centuries CE. The early historic Pandyas faded into obscurity upon the rise of the Kalabhra dynasty in south India. From the 6th century to the 9th century CE, the Chalukyas of Badami or Rashtrakutas of the Deccan, the Pallavas of Kanchi, and Pandyas of Madurai dominated the politics of south India. The Pandyas often ruled or invaded the fertile estuary of Kaveri (the Chola country), the ancient Chera country (Kongu and central Kerala) and Venadu (southern Kerala), the Pallava country and Sri Lanka. The Pandyas fell into decline with the rise of the Cholas of Thanjavur in the 9th century and were in constant conflict with the latter. The Pandyas allied themselves with the Sinhalese and the Cheras in harassing the Chola Empire until it found an opportunity for reviving its frontiers during the late 13th century. The Pandyas entered their golden age under Maravarman I and Jatavarman Sundara Pandya I (13th century). Some early efforts by Maravarman I to expand into the ancient Chola country were effectively checked by the Hoysalas. Jatavarman I () successfully expanded the kingdom into the Telugu country (as far north as Nellore), south Kerala, and conquered northern Sri Lanka. The