Origin of Dash & Das surname

Dash/Das is neither caste nor a family.  It is an honorific & religious title. Surname(उपनाम/कुलनाम ) and Title(उपाधि/पदवी):- Historically, surnames evolved as a way to sort people into groups - by occupation, place of origin, clan affiliation, patronage, parentage, adoption, physical characteristics, etc. Surnames (उपनाम/कुलनाम )and titles (उपाधि/पदवी)or decorations used along with the proper names commonly added at the end of the names - are either genealogical or professional and sometimes topographical. The genealogical surname has been in use from generation to generation and it is generally family names some of which may even have been personal names. Professional names have also been adopted as family names and are regularly used as surnames. It has been a practice for quite a few centuries to award titles (उपाधि/पदवी)to persons who occupy positions of distinction in intelligence, learning, wealth, honor, etc. Persons who have rendered meritorious service to the country