I just performed a Griha Pravesam, the Hindu house warming ceremony, and I noticed an interesting Mantra that the priest chanted. The Mantra, which I assume was from the Pancharatra Agamas, was addressed to Sudarshana, referred to as Chakrathalwar by Sri Vaishnavas, the god of Vishnu's Sudarshana Chakra. What I found interesting is that the Mantra addressed him as "Vijayavalli Sametha Sudarshana", meaning "Sudarshana accompanied by Vijayavalli".
This construction is usually used in the context of husband and wife. And indeed Wikipedia says that Vijayavalli is Sudarshana's wife. So my question is, who is Vijayavalli? Whose daughter is she, and how did Sudarshana marry her? And given that Rama's brother Bharata and Parashurama's enemy Kartavirya Arjuna were incarnations of Sudarshana, were their wives incarnations of Vijayavalli?
Do any Pancharatra Agamas or Puranas shed light on this?