Nagas of Vidisha

The Naga (IAST: Nāga) dynasty of Vidisha in central India is known from the Puranas, and probably ruled in the first century BCE. No inscriptions of the dynasty have been discovered. Historian K. P. Jayaswal attributed some coins issued by the Datta rulers of Mathura to this dynasty, but later historians have disputed his theory.
Rulers.
The Nagas probably ruled at Vidisha during the first century BCE.
According to the Puranas, the following Naga kings ruled Vaidisha (kingdom of Vidisha):
The Puranas mention the Naga king Shesha ("Śeṣa Nāgarāja") as the father of Bhogi, but historian A. S. Altekar theorized that Shesha is a mythical figure (see Shesha and Nagaraja), because the Puranas explicitly describe Vangara as the dynasty's fourth king (if Shesha was a historical king, Vangara would become the fifth king).
After mentioning these kings of Vidisha, the Puranas refer to the king Shishu-nandi (Śiśunandi) and his descendants, who ruled after the decline of the Shunga dynasty. According to one interpretation, Shishunandi and his successors, which included Nandi-yashas (Nandiyaśas) and Shishuka (Śiśuka), were the Naga kings of Vidisha.
Coins.
No inscriptions of the dynasty have been discovered. Several coins issued by the kings whose names end in "-datta" have been discovered at Mathura and its neighbouring places. These kings include Shesha-datta, Rama-datta, Shishu-chandra-datta, Shiva-datta, Purusha-datta, Uttama-datta, Kama-datta, and Bhava-datta. These kings are usually identified as members of the distinct Datta dynasty. However, historian K. P. Jayaswal theorized that these kings were actually the Naga rulers of Vidisha: he identified Shesha-Nagaraja with Shesha-datta, Rama-chandra with Rama-datta, and Shishu-nandi with Shishu-chandra-datta. Jayaswal argued that these coins were found at Mathura, because that city has been a major market for coins since the ancient times. He also read the suffix mentioned on the coins as "-data" ("donor") instead of "-datta", and asserted that "Rama-datta" should be read as "Rama, the celebrated donor". Jayaswal further argued that the Puranas describe the Naga kings of Vidisha as "vrisha" (IAST: "vṛṣa", "bull"), and that the symbol Shiva's bull Nandi) appears on the Mathura coins.
Historian A. S. Altekar disputed Jayaswal's theory based on several arguments: