Who is calpurnia?

Calpurnia is a black woman who works as the Finch family's cook and housekeeper. She is one of the many motherly figures in Scout's life and one of the few who can negotiate between the very separate black and white worlds of Maycomb.

The maid of the house

The maid of the Finch household she helps out Atticus as his wife died of cancer

when the children were younger so she is a mother figure to Jem and Scout