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Some of the notable Kamma Nayak clans of Vijayanagara include the Pemmasanis, Sayapanenis, and Ravellas. During the reign of the Vijayanagara Empire, Kamma Nayaks (commanders) were appointed as governors in many areas of Tamil Nadu. It's possible that the influence of Kamma generals led to the importance of the Telugu language in Vijayanagara and the rise of Telugu colonies in Tamil Nadu. Krishnadevaraya's court had a significant presence of Kamma officers, and they entered into matrimonial alliances with the royal family. Their role in protecting the last great Hindu kingdom of India was significant. During the reign of Krishnadevaraya, Kammas are said to have formed the bulwark of the Vijayanagara army. Kammas served as ministers, military generals, and governors in the Vijayanagara Empire. The other sons of Belthi Reddi are similarly said to have given rise to the other prominent caste communities of the Telugu people. A popular legend collected by Edgar Thurston narrates that Kammas originated from the youngest son of a certain Belthi Reddi, who managed to recover his mother's ear-ornament (called "kamma" in Telugu) that had been appropriated by Emperor Prataparudra's minister. The tradition holds that the Kammas, along with Velamas and Reddis, evolved out of the community of Kapus (cultivators) in the post- Kakatiya period. But the migrants retained links to the homeland and returned to it whenever the situation was favourable. By 1872, only one-fourth of their total population was living in the original region.
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The migration was apparently quite extensive, and was made by possible by the Kammanadu's strategic location with access to the Deccan plateau as well as to the regions in the south and southwest. Terms such as kamma-brahmana, kamma-komati, kamma-sreshti and kamma-kapu are attested in inscriptions as descriptions of people. Īs the people of the region migrated to other parts, they were often referred to as the Kamma community ( kamma-kula). The term " kamma" either referred to the two rivers that formed the boundaries of the region, or to the Buddhist monastic institutions called sanghakammas believed to have been once prevalent in the region. The region, lying between the Gundlakamma river and the Krishna river in the erstwhile Guntur district (which included the three subdistricts later transferred to the Ongole district in 1970), had an identity dating back to ancient times. The modern community of Kammas is believed to have originated from agriculturists of the Kammanadu region in coastal Andhra Pradesh.
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