is a fictional character
in the novel
series The Baby-sitters Club
and Baby-sitters Little Sister
, both written by Ann M. Martin
. Nancy and her family are Jewish
. They live next door to Karen Brewer's mother's house, in a subdivision of the fictional town of Stoneybrook
. Nancy has a baby brother, Danny, and a kitten, Pokey. She is a 7-year-old student
in Ms. Colman's second-grade class at Stoneybrook Academy with her two best friends Hannie Papadakis
and Karen Brewer
. The trio call themselves "The Three Musketeers" or the "3M."
Nancy enjoys theater, ballet, and playing the clarinet. She has an adopted grandmother from Stoneybrook Manor, a retirement center, through a program at school. Nancy is a homebody at heart, and she often suffers from homesickness when at summer camp.