His research into the Hoysala period, regarded as one of the golden periods in the history of Karnataka, led to the unearthing of stone inscriptions that shed light into the motherhood of Hoysala Queen Shantaladevi, thus debunking the myth that she committed suicide for being childless. Through his research he was able to establish that Queen Shantaladevi was the mother of three sons and a daughter. In the year 1977, he self -published his magnum opus “Pattamahadevi Shantaladevi”, a historical novel spanning 2162 pages. This work was hailed as “Gadya Mahakavya” by historians, critics and readers alike. Sri M.V. Kamat, the editor of Illustrated weekly of India lauded the novel as the biggest literary work ever published. The Hindi translation of this novel translated by Sri P. Venkatachala Sharma and published by Bharatiya Jnanapith has been well received. 

C.K. Nagaraja Rao wrote two additional novels “Veeraganga Vishnuvardhana” and “Dayada Daavanala?” that further chronicle the history and times of the Hoysala dynasty. These novels record the history through hundreds of characters, many historical, and some imaginary to strengthen the narration. He penned “Sri Pruthvi Vallabha”, covering the Chalukya dynasty and the period of their famous King Tailapa.

Early life
Theatre & Radio Plays
Research: History & Culture of Karnataka
Historical Novels