Let the battle with Kanya Kubja first be over, then we shall find some way out of the difficulty.
"The King of the Dark Chamber"
Rabindranath Tagore (trans.)
The Sarwarias are descended from Kubja who refused the present and therefore are purer than the Kanaujias, whose ancestor, Kanya, accepted it.
"The Tribes and Castes of the Central Provinces of India Volume II"
R. V. Russell
Kanya and Kubja are simply the two parts of Kanyakubja, the old name for Kanauj.
"The Tribes and Castes of the Central Provinces of India Volume II"
R. V. Russell