Note 5 — Chapter XXXIX · CREMATION OF AN ARHAT. SERMON OF A DEVOTEE.
James Legge translation
(5) This king must have been Maha-nana (A.D. 410-432). In the time of his predecessor, Upatissa (A.D. 368-410), the pitakas were first translated into Singhalese. Under Maha-nana, Buddhaghosha wrote his commentaries. Both were great builders of vihâras. See the Mahavansa, pp. 247, foll.