Brahman is a cast , while birthary is a gotra. Together both were used to identify roots of a person and forbid self breeding.
Lomash gotra ke kuldevi konsi hai
Rajoriya is a gotra of brahman (pandit) caste but many scheduled caste also use Rajoriya in their surname but originally it is gotra of sanadhya brahman . Raajoriya/Rajauriya /Rajoria
Sankhyan is a 3rd class caste in india. The people of this caste are ill, narrow minded with no confidence in them
yes it is
Sikdar is Brahmin, and their Gotra could be one is Kashyapa, and Shandilya Too both As you can see great mathematician Radhanath Sikdar founder of mount Everest
Is droch gotra is of chamar caste
Pujabhi Saraswat bramhins of Lakhanpal caste have kaushal gotra.
Europ
Kushal gotra for gund caste. Sunar community
Yes Naga gotra is of Kshatriya caste.
Uttar Rarhiya Kayastha , Gotra - Batsya
Brahman