Among available works on Kannada grammar, a part of "Kavirajamarga" (850) forms the earliest framework. The occurrence of the term "purvacharyar" in some contexts of the writing may be a reference to previous grammarians or rhetoricians. Though Nagavarma-II is credited to be the author of the earliest exhaustive Kannada grammar, the author mentions his predecessors, Sankavarma and Nagavarma-I (the extant "Chhandombudhi", "Ocean of Prosody", c. 984) as path-makers of Kannada grammar. The exact time when grammarian Nagavarma-II lived is debated by historians. Until the discovery of "Vardhamana Puranam" ("Life of Varadhama", c. 1042) written in Kannada by an author who goes by the same name, it was broadly accepted by scholars including E.P. Rice, R. Narasimhacharya and K.A. Nilakanta Sastri that Nagavarma II lived in the mid-12th century (1145) and was also the "Katakacharya" ("poet laureate") of Chalukya King Jagadhekamalla II. However, of late, the Encyclopaedia of Indian literature, published by the Sahitya Akademi (1988), and scholars D.R. Nagaraj and Sheldon Pollock concur that Nagavarma II lived in the mid-11th century and was the poet laureate of Chalukya King Jayasimha II, who had the epithet "Jagadekamalla" ("Lord of the world").