Mantralaya which is dedicated to Guru Raghavendra is located in a village in Kurnool district in Andhra Pradesh, India. It lies on the banks of the Tungabhadra river on the border with neighbouring Karnataka state. Guru Raghavendra is the son of Timmanna Bhatta and Gopikamba. Gopikamba gave birth to a divine boy named "Venkathanatha" he was named venkathanatha in gratitude to Lord Venketeshwara by whose blessings this brilliant child had been born. Venkathanatha with his brother was invited to stay in Sri Sudhendra Theertha matt. Sri Sudhendra Theertha was pleased with the sincere devotion and cleverness of Venkanna. He stayed with Sri Sudhendra Theertha and finished the study of Amara Kosha. Venkathanatha was married to Saraswathi Bai and later blessed with a boy but due to the poverty they went to Kumbakonam Venkathanatha was always been an apple of Shri Sudheendra Swami's eye. Time came when Venkathanatha has to succeed his Guru as the next Swamiji of the Mutt. Venkathanatha had a blessing of Sharada Devi, the goddess of Learning and that led him to realization of self and he narrate his experience of Sharada Devi to Swamiji and decided to do Upanayana to his son and accept sanyasa. He took sanyasa and Guru named him guru Raghavendra theertha. Saraswathi was shocked to hear the news and she fell into the well. She came as a ghost in front of Guru guru Raghavendra. He sprinkled holy water on the ghost and it attained Moksha by purification. Guru Raghavendra was great in every aspect and performed miracles and helped all his devotes in all aspects. At the age of 78 Swamiji announced that by order of Shri Hari he would leave this world. On the morning of Shravana, finished his morning religious rites and distributed the theerta and blessed all his devotees. He called Venkanna Diwan a prime devotee and gave him a parting message."I am going to enter the Brindavana in an yogic posture and continue to do Japa (prayer) with a Tulasi Mala (Japa Mala/Chain of Holy beads) in the hand. When I stop the prayer place the 1200 Lakshminarayana Saligramas (Holy Stones) in a bronze container and Mrutike (Holy Sand) on my head and close it with a lid and then place some sand/mud. Venkanna was also entrusted by the Guru to build his Brindavan at Manchala (now Mantralaya). Swamiji asked Venkanna to put a stone on which Lord Rama had sat during thretha yuga as the base. It is believed that Guru Raghavendra Swami is in the Vrindavana from the past 339 years and is believed to be in the Vrindavana for another 361 years. While entering the Vrindavana, Guru Raghavendra Swami stated that he would be there for 700 years. Yogeendrawas named as Guru Raghavendra as his successor and entered the Brindavan in 1671 AD. After Swamiji entered, his disciple Appanacharya sang the praise of his Guru and seeing the Guru's Brindavan, He could not speak, the last verse of the song was completed by Guru in the Brindavan. Still Guru Raghavendra continues to bless people who think of him in their troubles and happiness.