Yes, it is another name for the Twashta Kasar community of Marathi brahmins
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.
Yes Vaidya is Marathi Brahmin surname, but found in other castes too
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
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.