It is commonly found among the Hindu Bengali Kayastha and Baniks including Subarnabanik community in Bengal region.
[13] Furthermore, Kalhana has explained in Rajatarangini, a book considered vital by historians that the term Dhar comes from the word Dharra (Pronounced : Darra) which also happened to have a connection to an ancient mountain ridge called Kakodar.
Kalhana has used the word "similar" for both Dar and Dhar in Rajatrangini, giving modern-day historians a hint of changing pronunciation claims to be true.
[15] According to some Pandit historians the surname originates from the Sanskrit word Dharra which translates to "Lord" and historically this term was always used as a Suffix for the mountains of Kashmir e.g. Karkotadharra which is now called Kakodar.
With the advent of Islam in Kashmir, new Muslims who had converted from Hinduism retained their surname, but may have modified the spelling to differentiate themselves from the Kashmiri Hindu from which they came.
Pandit Anand Ram Pahalwan has carried the History of Kashmir by Narain Kaul from 1712 A.D. to 1785 A.D. Birbar Kachru, besides being a historian, wrote good poetry as well.
"[18]This specific passage explains the probability that there is a high chance many Sanskrit surnames may have been influenced by Persian in the Early Kashmiri Hindu community.
Not to ignore that even in the Modern Era a Popular Pandit surname Bhatt is written as Batt / Butt by Potohari / Punjabi Speaking Muslims of Kashmiri descent (or ethnic bloodline) around the world which may also have similar reasons.
[19] Some Historical accounts clearly record the involvement of people belonging to modern day Dar tribe in Kashmir's politics.