The correct answer is Basavanna.Virashaiva Movement in KarnatakaThe Virasaiva or Lingayata movement was developed by Basavanna a minister of the Chalukya king Bijjala Raya of Kalyana (1157-68 AD). There is every reason to believe that it came into existence one or two centuries earlier through the activities of some Brahmana Saiva reformers.Basavanna used his political power and position in furthering the cause of this movement which was as much a social reform as a religious one. In the tenets of this school, Visistadvaitavada played an important part.Virasaivism means the Saivism of the stalwarts or heroic Saivism.The name serves to distinguish the Virasaivas from the three other classes of Saivas viz the samanya Misra and the Suddha-Saivas.The first two of these classes worship Siva alone.The Linga they wear on their person distinguishes the Virasaivas from the Suddhasaivas. Hence the name 'Lingayats' is also applied to them and the cult itself is called Lingayata.The Virasaivas philosophy is called Saktivisistadvait a term which means the non-duality of God (viz, Parasiva) as qualified by power or Sakti.There is no duality between the soul and the Lord God and soul are in an inseparable union through the inalienable power called Sakti.Additional InformationApparHe is one of the four Tamil Samaya Acharyas.He was a contemporary of Sambandhar.SambandarHe is also referred to as Thirugnana Sambandar a Saiva poet-saint of Tamil Nadu who lived sometime in the 7th century CE.SundararHe is also referred to as Chuntarar, Chuntaramurtti, Nampi Aruran, or Tampiran Tolan, was an eighth-century poet-saint of Tamil Shaiva Siddhanta tradition of Hinduism.