Dera Sucha Sauda -Sikh conflict in India

[Bharatvarsh]

Dera is as Bodhi said from Farsi, here is the origin:
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->H देरा derā (P. dera; prob.=dehrā, q.v.), s.m. House, habitation, dwelling, tent (=ḍerā); an idol-temple (=dehrā).

http://dsal.uchicago.edu/cgi-bin/philologi...ct&display=utf8<!--QuoteEnd--><!--QuoteEEnd-->
Dun could be native.