Yes, Kushary is a Bengali brahmin's surname & Kushary is the original surname of Thakur family.
Generally SC people use the surname bhowmick in hindu religion. Presently others also using.
No
no
no
Anyone with the surname 'Sharma' is a Hindu Brahmin
Bengali Brahmin surname
Yes, They are brahmins and they perform worship also Therefore Nath's are Brahmin
Mishra is a Brahmin Surnames. This Surname use by many sects of brahmins such as Utkala Brahmin, Bhumihar Brahmin etc. But other misra surname use by Bengali Brahmins and others. In midnapore, there is all Mishra are Utkala Brahmins(Odia Brahmins) who migrated to Bengal.
No, Karmakar falls under the Shudra caste. what is your question? whose are vishwakarma caste in bengal?
No, Khairnar is not Brahmin Surname. It is Marathi Surname.
no.