 Important contributions were made by some prominent literary families . One Jain family produced several authors , including Mallikarjuna , the noted <unk> ( <unk> ) ; his brother @-@ in @-@ law Janna ( 1209 ) , the court poet of King Veera Ballala II ; Mallikarjuna 's son Keshiraja ( 1260 ) , considered by D. R. <unk> , a scholar on literary cultures in history , to be the greatest theorist of Kannada grammar ; and <unk> , 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 ) . 
