The name Kees is not derived from CORNELIUS, but from CORNELIS. Cornelius does hardly occur in the Netherlands, but CORNELIS is very common. Other derivatives are COR, CEES or NELIS. [noted -ed]
― Anonymous User 1/11/2018
1
Kees Moeliker, a Dutch biologist and winner of the Ig Nobel prize for his observations of homosexual necrophilia amongst ducks (Anas platyrhynchos).