There is nothing in them (Puranic accounts), as far as I am aware, really inconsistent with the most ancient book we possess, namely, the Rigveda, an… - Frederick Eden Pargiter

Indian tradition knows nothing whatever of the Aryans' invasion of India through the north-west....All this copious tradition was falsely fabricated, and the truth has been absolutely lost, if the current theory is right; is that probable? If all this tradition is false, why, how, and in whose interests was it all fabricated.?

[tradition] makes the Aila power begin at Allahabad and yet distinctly suggests that they came from outside India.

One branch, headed by Uśīnara established several kingdoms on the eastern border of the Punjab [...] his famous son Śivi originated the Śivis [footnote: called Śivas in Rigveda VII.18.7] in Śivapura, and extending his conquests westwards [...] occupying the whole of the Punjab except the northwestern corner.