Younger brother of Aggabodhi III; he was made viceroy when Māna was killed Cv.xliv.123 f). When Aggabodhi had recovered the kingdom from the usurper Dāṭhopatissa, which he did only after various reverses in his fortunes, Kassapa abused his influence and plundered various sacred edifices to provide for his army (Cv.xliv.137 f). On Aggabodhi’s death in exile in Rohaṇa, Kassapa defeated Dāṭhopatissa, who claimed the throne, and became king in his place (Kassapa II. 641-50). He did not, however, wear a crown, the regalia having probably been stolen. As king he repented of his former misdeeds and did various acts of merit (Cv.xliv.147 ff; xlv.1 ff). He paid special honour to Mahādhammakathī Thera of Nāgasālā and to the Thera of Atandhakāra.

His children all being young at the time of his death, he entrusted the government to his sister’s son, Māna (Cv.xlv.8). According to the chronicles, Mānavamma was the son of Kassapa (Cv.xlvii.2). He also had a son named Mana (Cv.lvii.4).