Anglesey

• Type: Region / Island
• Location: Wales, United Kingdom
• Owner/Residents: Home of the Holyhead Harpies
• Key Features: An island off the north-west coast of Wales, containing the wizarding settlement of Holyhead.

Anglesey is a real-world island and county situated off the north-western coast of Wales. In the Wizarding World, its primary significance is as the location of Holyhead, the hometown of the celebrated Holyhead Harpies Quidditch team. The Holyhead Harpies, founded in 1203, are described as a “very old Welsh club” and are famous for only hiring witches to play on their team (Quidditch Through the Ages). This establishes Anglesey as a location with a long and significant history within the wizarding community, particularly in the culture surrounding the sport of Quidditch.

While Anglesey is not directly named in the seven main novels, its importance is felt through its connection to the Holyhead Harpies. The team is mentioned by characters such as Horace Slughorn, who proudly tells Harry Potter that he receives free tickets to their matches from the team's captain and his former student, Gwenog Jones. The location's relevance extends into the post-Hogwarts era. After the Second Wizarding War, Ginny Weasley pursued a successful professional Quidditch career as a Chaser for the Holyhead Harpies. After retiring from the sport to start a family with Harry Potter, she became the senior Quidditch correspondent for the Daily Prophet (Pottermore). Therefore, Anglesey represents a significant place in the adult lives of major characters.

• Holyhead: The only known wizarding settlement on Anglesey. It serves as the home base for the Holyhead Harpies Quidditch team and their stadium.

• J.K. Rowling has stated that the Holyhead Harpies are her favourite Quidditch team, partly due to a “long-standing affection for Holyhead itself” (J.K. Rowling's old website).
• It is a popular fan speculation that the Hut-on-the-Rock, where the Dursleys took Harry Potter to escape his Hogwarts letters in 1991, could be located off the coast of Anglesey. While geographically plausible given the Dursleys' journey from Surrey, this has never been confirmed in any canonical source.