Founder of Vishishtadvaita Philosophy.
Tiruvarangathu Amudhanar was a contemporary of Ramanuja, he wrote 108 verses in honor to him, the Ramanuja Nutrandhadi. It is part of Nalayira Divya Prabhandam.
Read Ramanuja Nutrandhadi here
http://ramanuja-nootrandadi.blogspot.com/