|"We must've been through hundreds of books already and we can't find him anywhere —"|
Known family members
- Johannes Jonker — a No-Maj-born wizard and wandmaker
- Mr Jonker — a No-maj cabinet maker; father of Johannes
Jonker is a Dutch surname, derived from the Middle Dutch word jonghheer, "young nobleman," itself a combination of the Middle Dutch words jong, "young," and herr, "lord" or "master."