1) This is a reference to a Turkish study about Q1b being found in abundance among Afshars:
(This can also be found at http://en.wikipedia.org/wiki/Haplogroup_Q_%28Y-DNA%29#Europe)
2) This is about the Afshar Emperor of Persia, Nader Shah (this is personally relevant to me, because my ancestor migrated here with his armies).
3) This is about the Afshar tribe:
4) This is about the dynasty: