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jacobus koolen
painter from the Northern Netherlands, NL
(b. 1639)
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peter koolen
Dutch mayor, NL
(b. 1776)
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dionysius adrianus petrus norbertus koolen
Dutch politician (1871-1945), NL
(b. 1871)
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gerardus koolen
Dutch politician, NL
(b. 1823)
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d.a.a. koolen
Dutch engineer and professor
(b. 1910)
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martinus koolen
(b. 1874)
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harry koolen
Dutch painter (1904-1985), NL
(b. 1904)
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maria koolen
Dutch Righteous Among the Nations, NL
(b. 1905)
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antonius josephus maria koolen
NL
(b. 1897)
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harry koolen
Dutch painter (1910-1990), NL
(b. 1910)
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adrianus koolen
NL
(b. 1902)
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kees koolen
Dutch rally raid racer and businessman, NL
(b. 1965)
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janos koolen
Dutch guitarist, NL
(b. 1981)
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otto koolen
(b. 1923)
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jurjaan koolen
Dutch volleyball player (1938-2020), NL
(b. 1938)
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) , all over the world, is quite a rare last name. The cognomen Koolen is habitual in Netherlands, where it is quite a common surname, Belgium, where it is quite a rare surname, and Slovakia. In absolute terms, it most frequently occurs in Western Europe, particularly Netherlands, Belgium, and Germany. Very seldom, Koolen is the forename as well as the last name.