Important contributions were made by some prominent literary families. One Jain family produced several authors, including Mallikarjuna, the noted anthologist (1245); his brother-in-law Janna (1209), the court poet of King Veera Ballala II; Mallikarjuna's son Keshiraja (1260), considered by D. R. Nagaraj, a scholar on literary cultures in history, to be the greatest theorist of Kannada grammar; and Sumanobana, who was in the court of King Narasimha I and was the maternal grandfather of Keshiraja. Harihara (1160) and his nephew Raghavanka (1200), poets who set the trend for using native metres, came from a Shaiva family (devotees of the god Shiva).