"The Puranic tradition, even if not in written form, existed already “in the Upaniṣadic period if not earlier” (Siddhantashastree 1977) and was mentioned in the Mahābhārata (18.6.97, “eighteen Purāṇas”) and in the Chāndogya Upaniṣad (7:1:2-4).... These distortions are common fare in any appropriation of ancient history by later writers, and only corroborate that we are dealing with authors really trying to do history, though it was an embellished and ideologically streamlined history. So, we have to treat would-be historical information from the Purāṇas with care; but with that caveat, we dare provisionally to draw upon at least the Puranic genealogies. These are the hard core of their pretended narrative of the past."