Hridayaleeswarar

 https://www.google.com/search?q=Hridayaleeswarar

Telugu

http://www.telugubhakti.com/telugupages/Nayanars/Nayanars.htm

https://www.google.com/search?q=Telugu+Basava+Purana

contemporary

 https://www.google.com/search?q=contemporary+nayanar

Pallava

 https://www.google.com/search?q=Pallava+Nayanar

Thiruninravur

 https://www.google.com/search?q=Thiruninravur

Heart

 https://www.google.com/search?q=Nayanar+Heart