Donker is a Dutch surname. Donker means `dark, somber` in modern Dutch, and was probably a character reference. Alternative spellings include Donkers, (de) Doncker and Donckers. People with these surnames include: ... Found on http://en.wikipedia.org/wiki/Donker
1) Dutch surname 
Donker is a Dutch surname. Donker means `dark, somber` in modern Dutch, and was probably a character reference. Alternative spellings include Donkers, (de) Doncker and Donckers. People with these surnames include: ...