What background is there on the name Calpurnia? I need a comparison of
the root of the word and the character in the book "To Kill a
Mockingbird".

Calpurnius was the gens (clan) name of a famous Roman family (often
surnamed Piso). Calpurnia would have been the name given to any
daughter of the family. The Romans didn't normally give unique first
names (praenomens) to their daughters, in contrast to their sons. If
there were two or more daughters in any branch of the family, they
would be named Calpurnia the Elder, Calpurnia the Younger, etc. to
distinguish among them. The most famous Calpurnia was the wife of
Caius Julius Caesar the Dictator.

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