Aksum has left no king list, annals or dated document for the fourth century. The reign is placed in the middle of the century only by inference: the sequence in which his coin types appear, the order of his stone inscriptions, and the single external synchronism of the letter from Constantius II preserved in Athanasius, which itself carries no year. No birth or death date is recorded at all, and published reign estimates differ by more than a decade at either end.
What would resolve this A dated Aksumite document naming the king, a securely dated external record synchronising his reign with a fixed event, or a scientifically dated archaeological deposit stratified against the coin sequence, for example radiocarbon dates from a closed context containing both his pre-Christian and Christian issues.
OpenAksumite archaeology and numismatics; Ge'ez and Sabaean epigraphy; late Roman documentary historyDavid W. Phillipson, Ancient Churches of Ethiopia: Fourth-Fourteenth Centuries