4.
It may seem arrogant of me to say, but it is very simple.
i am presuming that you mean "knees" instead of "kees".
Kees Goudzwaard has written: 'Kees Goudzwaard'
Kees Bakels was born in 1945.
Kees Staf died in 1973.
Kees Staf was born in 1905.
Kees Luesink was born in 1953.
Kees Ouwens was born in 1944.
Kees Ouwens died in 2004.
Kees Andrea was born in 1914.
Kees Andrea died in 2006.
Kees Bekker died in 1963.
Frederick Kees died in 1927.
Frederick Kees was born in 1852.