Mitra dynasty (Kosambi)

Mitra dynasty of Kosambi was centered on the city of Kosambi at the Vatsa region. Its capital Kosambi was among the most important trade centers in the ancient India. The dynasty also likely controlled territory in nearby regions such as Magadha.
Many of its rulers bear the suffix "-"mitra"" in their names. However, it is disputed how many kings the dynasty was composed of. Dhanabhuti, who is known for Bharhut inscriptions, may have been related to the Mitra dynasty. A number of different, and possibly, related Mitra dynasties existed in the northern India, and it is possible that they all can trace their lineage back into the royal house of the Shunga Empire.
Common symbols in the coinage of the Mitra dynasty include the tree-in-railing and the Ujjain symbol. Bull is a common animal to appear on the coinage.
The Mitra dynasty was ended when Samudragupta of the Gupta Empire annexed Kosambi in the middle of the 4th century CE.
Possible origins.
The Vatsa region and its capital Kosambi was among the most important trade centers in the ancient India. After the Mauryas and Shungas lost control of the region, Kosambi established itself as a strong independent civic center. Large number of coins from Kosambi is known. The initial coinage was based on locally modified variants of the Mauryan-Shunga style cast copper coins, and a few of the coins were inscribed with the city's name. Later coinage evolved to portray a more independent iconography, and they began to be inscribed with the names of rulers. This is an indication that the city's local government transitioned into a monarchy. Bull was a common symbol when the coinage minted by the city evolved to have a stronger local character.
It is likely that the Mitra dynasty started its independent rule in Vatsa after the Maurya Empire, or the collapse of the Shunga Empire, allowed various petty states to emerge in the Northern India.
There were possibly five different contemporary dynasties identifiable with the suffix "-"mitra". These various Mitra dynasties may have shared a link with the Shunga dynasty, as many of its rulers' names also ended with "-mitra"". It is possible that the Shungas may have used a similar method of governing provinces as the preceding Maurya Empire had done. Princes with royal blood would have been sent to govern the provinces, and after the central power had weakened they would have established their own dynasties. Some numismatic evidence for the possible connection between Mitras and the Shunga dynasty descending from Pushyamitra has been found.
There were, possibly linked, Mitra dynasties ruling in Panchala, Mathura, Ayodhya and also possibly at Magadha.
Expansion.
During the time period stretching from the 1st century BCE to the 2nd century CE, the Mitras of Kosambi appear to have extended their hegemony over Magadha (including Pataliputra), and possibly Kannauj as well. Inscriptions and coins of the Mitra dynasty are known from various parts of Bihar.
Brhaspatimitra has been called "Magadharaja", a king of Magadha, in Kharavela's Hathigumpha inscription (that is related to Hathigumpha inscription). If the Brhaspatimitra mentioned in the inscription is the same king as the Brhaspatimitra of Mitra dynasty, then that would mean that the dynasty held a considerable influence in the region surrounding Kosambi. It is worth to note that there is numismatic evidence to support this theory, as Magadha is not known to not have produced any typical regional coinage unlike the contemporary Kosambi, Mathura or Panchala.
Conquest by the Gupta Empire.
Samudragupta (r. c. 335–375 CE) of the Gupta Empire appears to have ended the Mitra dynasty of Kosambi during his conquests in the middle of the 4th century CE. While the pillar was originally erected by Ashoka, Samudragupta later added his own inscription on the same pillar. Harisena, a poet and a high-ranking military commander in Samudragupta's army, was the author of the inscriptions.
According to the theory proposed by 19th-century archaeologists, and supported by Indian scholars such as Upinder Singh, the Allahabad pillar came from somewhere else, probably Kosambi. The Edicts of Ashoka suggest that the pillar was first erected at Kosambi, some 50 kilometers west of its current location. It was moved to Allahabad much later when the region came under Muslim rule. The presence of another broken pillar at Kosambi near the ruins of the Ghoshitarama monastery has led some to believe that the Allahabad pillar might have been one of a pair, not unlike the ones discovered at Rampurva.
List of kings.
Disputed kings.
The exact number of kings in the dynasty has been disputed to be between seven and twenty-five different kings.
Another opinion is that some of the Mitras of Kannauj actually belonged to the house of Kosambi, and that there were actually no long-lived separate Mitra dynasty at Magadha. K. D. Bajpai holds that the first Mitra ruler of Kosambi was Sungavarma (Sugavamasa). Sungavarma's name includes the epithet "Sunga", and that makes it possible to link him with the ruling dynasty of the Shunga Empire. Furthermore, Bajpai argues that Angaraja, Dhanabhuti and Visvadeva were also part of the Mitras of Kosambi. Their names appear in the Bharhut inscriptions. They would be probable descendants of king Sungavarma. The kings of Kosambi lent their patronage for the stupa of Bharhut, which would have been within the territory they controlled.
A genealogy constructed from the Bharhut inscriptions would link the above-mentioned kings to the Mitra dynasty so that Visvadeva would be father of Agaraju. Dhanabhuti would be Agaraju's son.
Coins of Mitra dynasty.
Most rulers of the Mitra dynasty of Kosambi, except Radhamitra, have the symbol known as the tree-in-railing in their coins. Another common symbol is the Ujjain symbol. Bull is a common animal to appear on the coinage of Kosambi of the era.
Some of the coins of Radhamitra are known for their unusual hexagonal shape. They were manufactured by casting, but they were made to closely resemble punch-marked coins. The civic coinage of Vatsa is known for their wide innovation in shapes of coins.
The symbols in one of Radhamitra's series of coins make a clear connection with other rulers of Kosambi such as Asvaghosa, Brhaspatimitra, Agnimitra, Sarpamitra, Prajapatimitra, Jyesthamitra and Prausthamitra. The coins cast by these rulers portray similar symbols in obverse and reverse sides of their coins. However, the exact chronology of these coins has not been extensively and conclusively studied yet. The civic coinage has been thought to precede the nominative coinage of the kings.