Since Bhutan emerged as an independent state, the most significant immigrant groups have been from Nepal and India. These people are collectively called "Lhotshampa" (meaning "southerner"), though a collective name may present an oversimplification because of the diversity within the group. The first reports of people of Nepalese origin in Bhutan was around 1620, when Shabdrung Ngawang Namgyal commissioned Newar craftsmen from the Kathmandu valley in Nepal to make a silver stupa to contain the ashes of his father Tempa Nima. The Newar are an ethnic group distinct from the Bahuns, Tamangs, Gurungs, Rais that form the Lhotsampa community.