[10][11] By the beginning of early medieval period, Karur (in interior Tamil Nadu) had acquired much prominence with respect to the other two centers, Muchiri-Vanchi and Thondi (both in Kerala).

[17] The so-called "renewal of the capital city of Vanchi (Karur) along with Kudal (Madurai) and Kozhi (Uraiyur)" by the Pandya king Rajasimha I (730 – 65 AD), described in the Madras Museum Plates of Jatila Parantaka Nedunjadaiyan Varaguna (765 – 815 AD), may suggest a Pandya occupation of the Kongu Chera capital Karur.

[18] Perhaps the Chera branch from present-day Kerala had crossed the Western Ghat Mountains to offer support to the Adigaman and after defeat they were pursued up to the Palghat Gap by the Pandya forces.

[19] Rashtrakuta inscriptions mention "an alliance of Dravida kings including "Kerala", Pandya, Chola and Pallava who were defeated" (E. I., XVIII).

[18] The branch of Chera family survived in Kongu country, now Pandya vassals, are described in later inscriptions (dated to 9th-11th centuries AD) as members of Chandra-Aditya Kula (the Luni-Solar Race).

[21] Pandya king Rajasimha II, who was defeated by Parantaka I, is known to have found asylum in the Chera country or Kerala (c. 920 AD).

[31] A silver coin with Nagari legend "sri vira keralasya" (11th–12th centuries AD) in British Museum is generally attributed to Kongu Cheras.

[31] Another coin known as "anai achu" (the elephant mould"), with the bow and arrow symbol, can also be a Kongu Chera product.

[31] The anai achu coin was current in western Tamil Nadu and to some extent in Kerala in the 12th–13th centuries AD.

[31] Several stone and copper inscriptions of the Kongu Cheras, probably Chola vassals, dated by palaeography to 9th – 11th centuries AD, are found in places like Vellalur, Namakkal, Pazhani, Perur, Dharmapuram, Erode and Tirukkannapuram.