History:
Kesarwanis geographic spread probably shows how people with this surname moved around over time. Its likely that many moved for work or business. Forced movements due to big changes might also explain where they ended up. The name itself might have changed slightly in different places over time.
Description:
Kesarwal: This surname is mainly found among Jains. Where people with this surname live might give clues, since some Jain groups have always lived in certain areas. The strong link to Jainism shows a common past and family ties within that religion.
Think of it like this: people might spell this surname slightly differently based on how they hear it spoken in different areas of India. A small vowel change, or a slightly different consonant, could easily happen over time.
