Re: Mughal caste
Good article on Ferghana Valley where Mughals originated.
http://en.wikipedia.org/wiki/Kara_Darya
http://www.world66.com/asia/centralasia/uzbekistan/ferghanavalley
http://www.stantours.com/uz_rg_fg.html
http://www.eurasianet.org/departments/insight/articles/pp101803.shtml