Elladora Ketteridge

Elladora Ketteridge (1656 - 1729) was the first witch to discover the properties of Gillyweed, although Beaumont Majoribanks was credited with it about a century later. She nearly suffocated after eating the plant, but saved herself by sticking her head into a bucket of water.

Appearances

 * Harry Potter and the Philosopher's Stone (video game)
 * Harry Potter and the Chamber of Secrets (video game)