Yes. Powale belongs to Daivadnya Bramhin
No, Khairnar is not Brahmin Surname. It is Marathi Surname.
Yes Vaidya is Marathi Brahmin surname, but found in other castes too
No it is not.
No, it is a Maratha surname (Kshatriya).
Yes.
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.
Deshastha Brahmin
Thenge is a common Marathi surname that belongs to the Maratha caste, which is traditionally a warrior caste in Maharashtra, India.
No, it is a Bania/Vani surname, meaning it is a Vaishya surname.
The Surname Tatwawadi in Marathi are Hindu Brahmin (Deshastha).
Marathi Surname "Keskar" belongs to Dhangar caste as well as Brahmin caste.
Saraswat Brahmin