Namesakes
Constantijn Huygens
(m) 1596-1687 
Notable Writers
Constantijn of the Netherlands
(m) 1969-
Other Royalty 1969- Netherlands (prince)
Alexander of the Netherlands
(a.k.a. Constantijn) (m) 1818-1848
Other Royalty 1818-1848 Netherlands (prince)
Theo van Lynden van Sandenburg
(a.k.a. Constantijn) (m) 1826-1885
Dutch Prime Ministers 1879-1883
Antonie Kamerling
(a.k.a. Constantijn) (m) 1966-2010
Notable Actors and Entertainers (actor)