The oldest surviving writing about it is from 360BC, and references records from 230 years or so before that. Any time before then, and 1540 BC certainly is, is plausible enough. Especially given the Late Bronze Age Collapse lies between them.

The oldest surviving writing about it is from 360BC, and references records from 230 years or so before that. Any time before then, with 1540 BC certain is, is plausible enough. Especially given the Late Bronze Age Collapse lies between them.