At least some content in this article is derived from information featured in Fantastic Beasts and Where to Find Them (film). As such, spoilers will be present within the article.
Jonker was born to No-Maj parents. His father was a successful cabinet maker, which presumably gave him early experience with wood-working, and allowed him to become a skilled wandmaker in his own right. Jonker's wands were in great demand and could be easily identified by the mother-of-pearl inlay they typically contained. Jonker experimented with several different wand cores before settling on hair of the Wampus cat as his preferred kind.
Behind the scenes
- As a Muggle-born, it is unknown how, or if, he was recruited to Ilvermorny School of Witchcraft and Wizardry because of Rappaport's Law restriction on the interaction of wizards with his muggle family.
- Pottermore (Mentioned only)
- Fantastic Beasts and Where to Find Them (film) (mentioned on wand permit application)