Imperial Cholas till 1064 CE. For almost 300 years from 1004 CE, the Kongu Cholas ruled autonomously. Chola monarch Raja Raja's general named, Kalimurka Vikrama was the founder of the dynasty and bore the title Konattar. The rulers of the 'Konattar' line adopted Chola titles and surnames. They came from the Konadu region (Pudukkottai) and ruled as a branch of Tanjore Cholas but were named as Kongu Cholas. The Kongu country came under the control of Vikrama Chola and Rajadhiraja, the two Kongu rulers who served as the later contemporaries of the Imperial Chola King Rajendra I and Kulottunga I, who ruled between 1070 CE and 1120 CE. Vikrama Chola III was the last ruler of the Kongu Chola line. During his time major parts of the Kongu region were under the Pandyas. Imperial Pandyas Rule (1251–1318 CE) From the 13th century CE, particularly after the death of Vikrama Chola II the Pandyas tried to dominate the Kongu region. They annexed some parts of Kongu Nadu. The inscriptions in the Srirangam temple speaks of the victory of Jatavarman Sundara Pandyan I over the Kongu Nadu. The glorious rule of the Pandyas came to an end with the death of Kulasekara Pandya who ruled Kongu Nadu between 1268 CE and 1318 CE. The Hoysalas conquered the Kongu Nadu and extended their rule. The Hoysala King Vira Someshwara had a matrimonial alliance with both Pandyas and Cholas. Vira Ballala III, successor of Vira Someshwara ruled the region. After the decline of the Hoysalas the Kongu region came under the control of the Delhi Sultanate. Vijayanagara Rule (1358–1667 CE) The Vijayanagara rulers in the course of a series of campaigns succeeded in overthrowing the Muslims, and they held the title Mahamandaleshwar and ruled the whole of South India. It was at this time that the Ummathur chieftains were apparently governing the dominion of Vijayanagara in Karnataka and Kongu region. The Umattur chieftains seem to have ruled over the Kongu country from 1446 to 1520 CE more or less peacefully rebuilding ruined temples and rehabilitating ruined towns damaged during the Muslim rule. Their rule ended when Krishnadevaraya (1509 CE–1529 CE) of Tuluva dynasty ascended to power. The first record comes from Kokkarayanpettai (Salem district) which describes him as Rajakkal Tambiranar. In the 1550s, Madurai Nayaks, who were the military governors of the Vijayanagara Empire, took control of the region. British India Period After the