Kooij
Kooij is a Dutch surname of occupational origin, derived from the word "koo" which referred to a type of cage or snare, often used for catching birds or small animals. Therefore, the name likely denoted someone who made or sold such cages, or perhaps a fowler or trapper.
Notable individuals with the surname Kooij include Pieter Kooij, a Dutch painter known for his still-life works