Use the online reference sources listed here to identify people that are associated with the region, time period or empire that you are interested in.
1. Search by region, empire, religion to start with. (i.e. Indus Valley, Mauryan Empire, Jainism etc.)
2. Once you have identified a person, search by their name (in all its various spellings) to read brief background information, to help you decide if they are of interest.
Credo Reference
Gale Virtual Reference Library
Oxford Reference
Reference Universe
Remember to follow the references/bibliography at the end of the pages to find more sources.
For further background resources, see the Reference Resources Guide.