This question tests knowledge of Telugu literature, particularly from the Kakatiya period and later. The correct pairings are: Vallabhacharya (Vinukonda Vallabharaya) - Kreedabhi-ramamu Ekamranatha - Prataparudra-charitamu Kase Sarvappa - Siddheswara-charitramu Koravi Goparaju - Simhasana Dwatrimsika