League of Twelve

The League of Twelve is not a known organization, event, or concept mentioned within the original seven Harry Potter novels by J.K. Rowling. It does not appear in the primary canon of the series. The term may be a misunderstanding or a conflation of several other concepts and numbers mentioned within the Wizarding World.

A user searching for the “League of Twelve” may have been looking for one of the following canonical or semi-canonical terms:

• The Twelve Uses of Dragon's Blood: This is one of Albus Dumbledore's most famous discoveries, as noted on his Chocolate Frog Card in Harry Potter and the Philosopher's Stone. This is a likely source of confusion, combining a significant magical achievement with the number “twelve.”
• International Warlock Convention of 1289: An event at which Albus Dumbledore is noted to have defeated an opponent in a duel. This event is mentioned on some versions of Albus Dumbledore's Chocolate Frog Card. (video game)
• The Wizengamot: The high court of law and parliament in wizarding Britain. While composed of approximately fifty members rather than twelve, it is the most prominent “league” or council of powerful witches and wizards in the series.
• The Order of the Phoenix: A secret society founded by Albus Dumbledore to oppose Lord Voldemort and his Death Eaters. While the number of members varied, the original Order was a small, dedicated “league” of wizards fighting for a common cause.