Yes Vaidya is Marathi Brahmin surname, but found in other castes too
No, Khairnar is not Brahmin Surname. It is Marathi Surname.
Yes, Surange is a Marathi Brahmin surname. It is commonly found among Marathi Brahmin communities such as Deshastha and Karhade.
No it is not.
No, Lalge is not a common Marathi Brahmin surname. Marathi Brahmin surnames typically end with suffixes like -kar, -e, -ikar, etc. Lalge may be a surname from a different community or region.
No, it is a Maratha surname (Kshatriya).
Yes.
Deshastha Brahmin
The Surname Tatwawadi in Marathi are Hindu Brahmin (Deshastha).
Marathi Surname "Keskar" belongs to Dhangar caste as well as Brahmin caste.
Deshastha Brahmin
No, Bhandari is not a Marathi Brahmin surname. It is a surname commonly found among communities like the Bhandari caste in Maharashtra, who traditionally were involved in occupations related to storing and selling grains or were landlords.
Saraswat Brahmin