In "To Kill a Mockingbird," what is Aunt Alexandra's last name?

Scout and Jem's aunt's name is Alexandra Finch Hancock. She is Atticus's sister who moves in with them. Aunt Alexandra tries to have a more traditional effect on the children, balancing out Atticus's liberal approach to child-raising. She is especially focused on Scout, who does not wish to conform to her aunt's ideas of ladylike behavior.