Periaazhwar Story

Periyaazhwar's real name is Vishnuchithar. Vishnuchithar lived in Srivilliputhur near Madurai.
Vishnuchithar makes garlands daily for Lord Vadapatrasai. One day Lord Vadapatrasai came in Vishnuchithar's dreams and told him to go to Madurai raajaa (king) and tell him that Lord Sriman Narayanaa is the best. Lord Vadapatrasai told Vishnuchithar since the king did not know who is the best. The king puts a kizhi (a magical bag of money) on top of a tree. When Vishnuchithar explains the king that Sriman Narayana is the best, the kizhi falls in Vishnuchithar's hands. The king gives him lot of prizes and drives him in his elephant. When Vishnuchithar reaches Srivilliputhur Lord Vishnu, with Thaayaar, chakaram and changu comes in the sky sitting on garudan. Vishnuchithar saw the beautiful Perumal and then he says long live perumal for million more years by singing பல்லாண்டு. Because of his deep love to Perumaal
he got the name Periyaazhwar.
In Upadesa Rathinamaalai (which i am learning now), Sri Manavaala Maamunigal says
"பொங்கும் பரிவாலே வில்லிபுத்தூர் பட்டர்பிரான் பெற்றான் பெரியாழ்வார் என்னும் பெயர்."