According to Kirkpatrick (British missionary), Gorkha Army honorary rank were Thapa, Rana in medieval history of Nepal. That Does Not mean that these people were Chettri. (1) Bhakti Thapa (2) Bhimsen Thapa and (3) Amarshingh Thapa all were Magar and “Thapa” were their Gorkhali army honorary ranks. These people were tribal people of Magar of gorkha army. Prithavi narayan Shah gave them honorary rank as a Thapa and Rana etc. But later, people use as their surname. We can find this kind of many historical examples in Nepal social cultural history. Like Newar of kathmandu, Does not mean only Shrestha and Bajracharya. There were so many different tribal people mixed up. But later most of the people convert their last surname as Shrestha. Outsiders start to tell Newar as a caste those who live inside kathmandu.