Adventures of Huckleberry Finn

In chapter 11, Huck enters a woman's house in a very bad disguise and introduces himself as "Sarah Williams."

What did you say your name was, honey?"

"M—Mary Williams."

"Honey, I thought you said it was Sarah when you first come in?"

"Oh, yes'm, I did. Sarah Mary Williams. Sarah's my first name. Some calls me Sarah, some calls me Mary."