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Chamar is basically a combination of two words, 'Ch' and 'Mar'. 'Ch' comes from sanskrit background and is a sort of acronym for the word 'Chandervanshi'. 'Mar' comes from persian background and connotes Naga origin (mar in persian mean naag). Chamars are therefore the people belonging to the 'Naga clan' of the Chandervansh race. The word has nothing to do with the occupation of dealing with leather though many of the people of this clan had to opt for such occupations after coming of Aryans. After the invasion of aryans, the Chamars were further divided into number of sub-groups which ultimately became untouchable castes and one such sub-group carried its original name 'chamar', whereas other subgroups were called by different names such as megh, batwal, doom, mahar, etc.