At several places, it refers to king Usinara and his son prince Sibi or Sivi whose charity has been enormously glorified by sage Markandeya.
Karna Parava refers to the Kekayas, the Malavas, the Madrakas, the Dravidas of fierce prowess, the Yaudheyas, the Lalittyas, the Kshudrakas, the Usinaras, the Tundikeras, the Savitriputras etc.
Mahabharata (and Katha sarit-sagara) refer to Usinaragiri which is located near Kankhala at the point where Ganges issues from the hills.
[8] [2] Bhagavata Purana also states that the Usinaras, the Sibi, the Madras, and the Kekayas were the direct descendants of Yayati's son Anu.
[9] [3] Consequently, in the literature, the Usinaras are often associated with the Shivis or Sibis (Sibois of the Greek writings) whose chief town Sibipura has been identified with Shorkot, in Jhang district in Pakistan.