In the book incidents in life of a slave girl children are named what?

The book you're referring to is "Incidents in the Life of a Slave Girl" by Harriet Jacobs. In the book, the main character, Harriet Jacobs, uses pseudonyms for herself and her children to protect their identities.

Here are the names used:

* Harriet Jacobs: She uses the pseudonym "Linda Brent" throughout the narrative.

* Her son: He is called "Benny" in the book.

* Her daughter: She is named "Ellen" in the book.

It's important to note that these are not the children's real names. Jacobs chose these names to maintain their privacy and safety.