Akka Mahadevi (ಅಕ್ಕ ಮಹಾದೇವಿ) Born to Nirmala and Sumati in Udatadi (or Udugani) near the ancient city of Banavasi (in Shikaripura taluk Shimoga district) in a Shiva temple was a prominent figure of the Veerashaiva Bhakti movement in 12th century Karnataka. Her Vachanas, a form of poetry are considered her greatest contribution to Kannada Bhakti literature. Wikipedia
The definitive Wikipedia entry for Akka Mahadevi. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Akka_Mahadevi
In the history of mankind we have more than one empress, thinker, warrior and freedom fighter, more than one anchorite, artist and scholar; but it has given only one elderly sister, that is Akka Mahadevi. www.ourkarnataka.com/religion/akka_mathapati.htm