Maya Sita

According to Skanda Purana, Ravana did not abduct Sita but Agni’s consort Swaha who transformed herself into Sita. Before the Sita-haran incident could occur, Agni had already taken Sita to Patalloka and kept his own wife 'Swaha' in her place.

https://en.wikipedia.org/wiki/Vedavati
http://bhaktiyoga.wordpress.com/transcribed-lectures/sita-navami-the-appearance-day-of-srimati-sita-devi/

Vipra
http://gaudiyahistory.iskcondesiretree.com/ramadasa-vipra/
https://www.youtube.com/results?search_query=Ramadasa+Vipra