The name of the Earthly father of our Lord is DEVA-RASAIAH which is not different from VISHNU-YASHAS (DEVA: VISHNU and RASAIAH : YASHAS, are fully compatible in several Indian languages). Regarding the place of birth of Kalki Maha Avatar, Maharishi Veda Vyasa states in Shrimad Bhagavatam (Canto 11, Chapter 5:38-42): "The followers of Lord Narayana will be few in Kali Yuga. Insignificant number of people may be found so eagerly worshipping the Lord in DRAVIDA DESHAM (South India), in a place where the river TAMBRAPARNI will be flowing. The other rivers of that land will be Cauvery, the ever Holy Vaigai and Palar. These people will desire to drink, however as devotees, the ever holy Vasudeva Himself (the message of the Lord). They will leave all their belongings, their position, status, wealth, parents, friends, etc., and will fully surrender to Lord Mukunda, always singing the graces of the Lord of Heaven, HARI, their redeemer".