 To propagate his teachings he established eight monasteries near Udupi, the Uttaradhi monastery, and the Raghavendra monastery in Mantralayam (in modern Andhra Pradesh) and Nanjanagud (near modern Mysore).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".