Yes,
There is such a name as kees and I know that because it is my dads name :)
Kees Slager's birth name is Cornelis Slager.
Kees Klop died in 2007.
Kees Verhoeven was born in 1976.
Kees van Aelst was born in 1916.
Kees Verkerk was born on October 28, 1942.
Kees Slager's birth name is Cornelis Slager.
Kees Coolen's birth name is Cornelis Coolen.
Kees Linthorst's birth name is Cornelis Linthorst.
Kees Brusse's birth name is Cornelius Brusse.
Kees Prins's birth name is Cornelis Willibrordus Maria Prins.
Kees Vendrik's birth name is Cornelis Constant Maria Vendrik.
Kees van Lier's birth name is Cornelis van Lier.
Kees van Kooten's birth name is Cornelis Reinier Van Kooten.
Jan Kees de Jager's birth name is Jan Cornelis de Jager.
Kees van der Staaij's birth name is Cornelis Gerrit van der Staaij.
Kees Goudzwaard has written: 'Kees Goudzwaard'
Joris Putman's birth name is Joris Jacques Kees Putman.