Carol Diggory Shields was a Hufflepuff student who was two years above Harry Potter, Ron Weasley, and Hermione Granger. After completing school in 1957, she married a Muggle named Albert and had two sons, Ted and Roger.
In Harry Potter and the Goblet of Fire, Carol and her family attend the Quidditch World Cup. She is described as a "plump, cheerful woman" with curly blonde hair and blue eyes. She is a loving and supportive mother, and she is devastated by Cedric's death. She never learns that her brother is killed on Voldemort's orders, and she is unable to truly reconcile with her son Ted's marriage to a muggle.
Carol Diggory Shields is a kind and caring person, and she is a loyal friend to Harry Potter and his friends. She is a reminder that even in the darkest of times, there are still those who are willing to stand up for what is right.
In addition to her role in the Harry Potter novels, Carol Diggory Shields has also appeared in several Harry Potter spin-off works. She is mentioned in the Harry Potter Lexicon and the Harry Potter Wikia. She is also portrayed by actress Shirley Henderson in the Harry Potter films Harry Potter and the Goblet of Fire and Harry Potter and the Deathly Hallows - Part 1.