Today is the Thirunakshatram of Sri Ramanujar, the great vaishnava acharya. Sri Ramanujar was responsible for spreading Sri Vaishnavam through the length and breadth of the country. Here goes a small story on the birth of Sri Ramanujar.
The Lord Sriman Narayana, appeared on earth in various forms, several times to act out His Jagan Natakam, and to impart true knowledge to all Jivatmas, so that they could break free of the hold of prakiti, which is also known as MAyA. Under the direction of His unfailing will, His divine weapons manifested themselves as the Alwars. But these incarnations were not completely successful. Sriman Narayana wanted to remedy this, and He decided to send his sacred royal subordinate “Aadiseshan” as a world teacher on a mission of compassion and service to the Divine.
In Sriperumpudhur, there lived a couple named Kesava Somayaji and Kanthimathi. The couple, though peaceful and blissfully married, were deeply upset over the fact that they had been issueless since their union in sacred wedlock. Tirukkacchi nambi of Poonamallee, who was a friend of Kesava Somayaji advised the latter to perform the celebrated PutraKameshti yagam to beget a child. Seeing much merit in the suggestion, Kesava Somayaji and Kanthimathi performed ‘PutraKameshti Yagam’ at Thiruvallikeni seeking the blessings of SRI PARTHASARATHY, the LORD of Thiruvallikeni. The lovely Lord of Tiruvallikeni appeared in their dream and gave them the assurance that He Himself would be born as their son.
And, on the twelfth day of the bright fortnight (shuklapaksham) of the Tamizh month of Chittirai, under the asterism of ThiruvAdhirai was born the greatest Acharya of SriVaishnavism – SriRAmAnujA. According to Western chronology, the date would have been the 4th of April in the year 1017 A.D – according to Indian chronology, it was the 4119th year of the Kaliyuga (Tamil year Pingala).With reference from http://srirangapankajam.blogspot.com/2007/11/ramanuja-vaibhavam-chapter-004.html For Further reading – http://www.saranagathi.org/acharyas/ramanuja/life.htm & http://www.srivaishnavam.com/ramanuja_lifehistory.htm