Herbert Stammelford was a mage and a member of the Chapter of the Gift and the Art. He was also the author of Dialogues on the Nature of Magic, which was one of tomes Ciri studied in Ellander under the tutelage of Yennefer.
- In The Witcher there is a high-quality black powder called Stammelford's dust.
- In The Witcher 2: Assassins of Kings, there's a potion called Stammelford's philtre.
- In The Witcher 3: Wild Hunt, there is an alchemy ingredient called Stammelford's dust.
- See the GWENT standalone game version card: Stammelford's Tremor
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