"Nilmata Purana (complied c. 500–600 CE, and the most important book for Kashmiris) contains accounts of Kashmir's early history. However, being a Puranic source, it suffers from a degree of inconsistency and unreliability.[15][a] Kalhana's Rajatarangini (River of Kings), all the 8000 Sanskrit verses of which were completed by 1150 CE, chronicles the history of Kashmir's dynasties from mythical times to 12th century. It relies upon traditional sources like Nilmata Purana, inscriptions, coins, monuments, and Kalhana's personal observations borne out of political experiences of his family.
During the later Vedic period, as kingdoms of the Vedic tribes expanded, the Uttara–Kurus settled in Kashmir. .. In 326 BCE, Porus asked Abhisara*, the king of Kashmir, to aid him against Alexander the Great in the Battle of Hydaspes. After Porus lost the battle, Abhisara submitted to Alexander by sending him treasure and elephants. .. The kingdom of Abhisara finds reference in ancient Indian texts also. In epic times and Buddhist times, it had formed integral part of ancient Kamboja Mahajanapada. Old kingdom of Abhisara was basically situated in the Poonch, Rajauri and Nowshera districts of Jammu and Kashmir."
http://en.wikipedia.org/wiki/History_of_Kashmir#Historiography
* Abhira: Ahir? Hazaras? Trikuta rulers (Jammu), Also won part of Maharashtra from Satavahanas.
How come they do not mention jews? You mean the jews came and were accepted by the original brahmins of Kashmir as their own? You can however say that the color of my aunt's hair was due to some admixture with Greeks, Kushanas, or Huns. I see more possibility of that.