prithvi narayan shah was from thakuri race ie, a mixture of khas and magar ethnicity. i dont consider myself the son of ashoka or pn shah,u dont have to. i dont think that ashok ruled over all the himalayan states during his reign. but it is for sure that aurengzeb ruled all of hill kingdoms through rajahs .so u may call urself kids of aurengzeb.
and newar is a community of aryans, dravidians and tibetan races who settled down in the valley. hinduism and buddhism both were brought here by bihari rajputs who ruled the valley for 1400 years after the kirats.