Jambu

Once Parvati mocked Shiva's penance for betterment of the world. Shiva wanted to condemn her act and directed her to go to the earth from Kailasam (Shiva's abode) to do penance. Parvathi in the form of Akilandeswari as per Shiva's wish found Jambu forest (Thiruvanaikoil) to conduct her penance. She made a lingam out of water of river Cauvery 

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

Comic Song
https://www.google.com/search?q=Jambulingame