The Vaishnava movement in the Kannada-speaking regions found momentum after the arrival of the philosopher Ramanujacharya (1017–1137). Fleeing possible persecution from the Chola King (who was a Shaiva), Ramanujacharya sought refuge initially in Tondanur and later moved to Melkote. But this event had no impact on Vaishnava literature in Hoysala lands at that time. However, the teachings of Madhvacharya (1238–1317), propounder of the "Dvaita" philosophy, did have a direct impact on Vaishnava literature, in both the Sanskrit and Kannada languages. This body of writings is known as "haridasa sahitya" (haridasa literature).