http://agasthiyarravikumar.org/temple_founder.html
upanishad-bramhan-mutt-kanchipuram
A place where lalitha sahasranamam taught by Hyagriva taught to Agastya.
blessedpair.blogspot.com
http://www.agasthiar.org/arunafr.htm
agasthya information
http://www.apamnapat.com/entities/Agastya.html
Rishi Agastya and Lopamudra
Rishi Agastya was once visiting heaven, he saw his deceased ancestors suspended with their head downwards. Agastya was surprised because this was a sign that they were preparing to go to hell. Agastya asked them what wrong had they committed. They told him that it was Agastya's fault that they would go to hell. Rishi Agastya did not have a son; in fact he was not even married. Hence the lineage would end with him. Then there would be no one to offer prayers on their behalf and they, Agastya included, would all go to hell, Agastya assured his ancestors that he would do the needful. But the task was easier said than done because there was no woman on earth worthy of his qualities and stature. So the Rishi with his ascetic and yogic powers created a female infant who possessed all the special qualities of character and personality that would be appropriate in the wife of a Rishi and called the infant Lopamudra.at that time the king of Vidarbha was undergoing austerities in order to obtain an offspring Rsi Agastya decided to gift this child to the noble and virtuous king of Vidarbha.
When Lopamudra was of marriageable age, Rsi Agastya approached the King and asked for the hand his daughter. The king was very disturbed to have such a request made of him by a renunciate, Especially as it was this Rsi that had donated the child to him in the first place. However, the king was also aware that his daughter had from childhood exhibited a very unusually high sense of discipline and charcacter, and had been naturally inclined to fasting, worship, penances etc. Lopamudra upon learning of the proposal insisted that her father accept. Lopamudra was happy to marry Rsi Agastya, however her father placed a condition that Rishi Agastya had to fulfil if the marriage was to take place. The king asked Agastya to get enough money so that his daughter would not have to live a life of total hardship.
In order fulfil this condition Agastya approached king Srutarvan for assistance. The king was more than willing to help, but Rsi Agastya in his greatness had put an unusual condition. He had insisted that the king should not give him wealth by depriving any other person of assistance. When the king demonstrated the equality of his income and expenditure (which included substantial charity) Agastya refused to take any assistance. Srutarvan then took Agastya to a greater king, Vradhnaswa, but the same story was repeated there. Then the three of them went to king Trasadasyu, but with the same outcome. Trasadasyu explained that only a Demon king would be able to meet Rishi Agastya's requirement because he gave no wealth in charity but accumulated it.
Accordingly they went to the Demon king Ilwala who had a younger brother named Vatapi, who had developed a very unusual power. He could transform himself into any creature. Then the creature could be cut up into any number of pieces and strewn about. When Ilwala summoned Vatapi with the mritsanjivani mantra, the pieces would join together with great force to reform the creature. The Demon brothers would use this technique to destroy brahmins. Vatapi would transform himself into a goat. His flesh would then be cooked and given to brahmins to eat, flavoured and disguised as a vegetarian dish. After the brahmins had eaten their fill, Ilwala would summon his brother and the pieces of the goat would burst through the stomachs of the brahmins, killing them.
When the three kings and Rishi Agastya arrived at Ilwala's court, the king decided to use the goat technique to kill them. After due courtesies dishes containing the goat were served to the guests. Rsi Agastya knew beforehand about the plan due to his immense Siddhi's so Rishi Agastya ate all the dishes himself and said "Vathapi Jeer No bhava" which literally means may Vathapi be digested. Ilwala then made many attempts to summon his brother but all that happened was a loud belch by the Rishi. Ilwala kept on repeating his command, but to no avail. Rsi Agastya laughed and said, "He cannot come out now. I have completely digested him." Though Ilwala was saddened at the death of his brother he asked the Rishi of what service he could be. Agastya repeated his request and condition. Ilwala then gave the sage more than he needed. In addition he gave a golden chariot and two super-fast steeds so that Rsi Agastya would reach his hermitage very quickly.
At the hermitage Rishi Agastya gave the excess wealth to the three kings and thanked them for their time and company. With the wealth obtained from Ilwala, Rishi Agastya was able to satisfy all of the king Vidarbha's conditions. In time Rishi Agastya asked for the hand of Lopamudra in marriage. The king was initially chagrined to hear such a suggestion from a renunciate, but found that his daughter, who had early exhibited extraordinary standards of mind and character, was insistent that he should accept the proposal. She was utterly intent upon exchanging the palace of her father the king for the forest-hermitage of Agastya.
Lopamudra and Agastya were duly married and lived a life of extraordinary felicity.
On their union Lopamudra asked for a son endowed with great power. Agastya asked her if she would like a thousand sons, or a hundred sons who are ten times as powerful as the first or ten who are a hundred times as powerful as the first or one son who is a thousand times as powerful as a thousand sons? Lopamudra chose one son. Agastya went to the forest after Lopamudra conceived and bore the embryo for seven years whilst Rishi Agastya meditated after which a resplendent son was born called Dridhasyu. And the great Brahmana and illustrious ascetic, endued with mighty energy, took his birth as the Rishi's son, coming out of the womb, as if repeating the Vedas with the Upanishads and the Angas.Endued with great energy while yet a child, he used to carry loads of sacrificial fuel into the asylum of his father, and was thence called Idhmavaha (carrier of sacrificial wood). And the Muni, beholding his son possessed of such virtues, became highly glad.
Rishi Agastya's ancestors no longer had to hang upside down but obtained the regions of heaven that they desired.