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