The writings of Madhvacharya and Vidyatirtha (author of "Rudraprshnabhashya") may have been absorbed by Sayanacharya, brother of Vidyaranya, the patron saint of the founders of the Vijayanagara empire in the 14th century. Bharatasvamin (who was patronised by Hoysala King Ramanatha) wrote a commentary on "Samaveda", Shadgurusishya wrote commentary on "Aitareya Brahmana" and "Aranyaka", and Katyayana wrote "Sarvanukramani". A family of hereditary poets whose names have not been identified held the title "Vidyachakravarti" (poet laureate) in the Hoysala court. One of them wrote "Gadyakarnamrita", a description of the war between Hoysala king Vira Narasimha II and the Pandyas, in the early 13th century. His grandson with the same title, in the court of king Veera Ballala III, composed a poem called "Rukminikalyana" in 16 "kandas" (chapters) and wrote commentaries (on poetics) on the "Alankarasarvasva" and "Kavyaprakasa". Kalyani Devi, a sister of Madhvacharya, and Trivikrama, his disciple, wrote commentaries on the Dvaita philosophy. To Trivikrama is ascribed a poem narrating the story of Usha and Aniruddha called "Ushaharana". Narayana Pandita composed "Madhwavijaya", "Manimanjari" and a poem called "Parijataharana". The Jain writer Ramachandra Maladhari authored "Gurupanchasmriti".