The first known reconstruction of the temple was recorded in a grant made by Kotte Kingdom King Parakrakrama Bahu VI (1412/1415–1467). The grant was made in Grantha script in Sanskrit. In his thirty-eighth regnal year (1450 or 1453) he summoned the chief priest of the temple, Vijasamagava Panditha(r), and reaffirmed the lands that had belonged to the Siva temple. The villages mentioned as belonging to the temple are Ilupaideni(ya), Kottaipitti and Tittakatai. Revenue accrued from this land grant was exempt from tax. The grant was inscribed on a granite slab and installed as part of the renovated temple. The conquest of Jaffna kingdom by Sapumal Kumaraya, a military leader sent by the Kotte king in 1450, was celebrated in the "Kokila Sandesaya" ("Message carried by Kokila bird") written in the 15th century by the principal monk of the Irugalkula Tilaka Pirivena in Mulgirigala. The book contains a contemporary description of the country traversed by the road taken by the cookoo bird, from Tenavaram, Tevan Thurai (referred to as Devi Nuwara - "City of Gods") in the south to Nallur ("Beautiful City") in the North of Sri Lanka. It mentions the Munneswaram temple. The second set of grants to be recorded were by another Kotte King, Parakramabahu IX (1509–1528), who donated extensive lands to the temple and recorded the deed in a copper plate inscription.