Rosalind Penderwick is a fictional character from the children's book series titled "The Penderwicks," written by Jeanne Birdsall. She is the eldest of the four Penderwick sisters and is known for her responsible and nurturing nature. Rosalind often takes on a motherly role, looking after her younger sisters while they navigate their adventures. The series follows the Penderwick sisters during their summer vacations, highlighting themes of family, friendship, and the joys of childhood. Rosalind's character embodies leadership and loyalty, making her a central figure in the stories as the sisters explore their surroundings and face various challenges together.