Answer
Dhanurdasa aka Pillai Urangavalli dasar. Dhanurdasa,a gymnast was a slave to his lovers eyes Kanakamba but when Swami Ramanuja showed him the beautiful lotus eyes of Lord Ranganatha he became mesmerised and stood rooted. From then on Dhanurdasa became a dasa of Swami Ramanuja . He also married Kanakamba who also willingly became a disciple of Swami Ramanuja.