Christian IV was King of Denmark and Norway, and Duke of Holstein and Schleswig from 1588 until his death in 1648. His reign of 59 years and 330 days makes him the longest-reigning monarch in Scandinavian history.
Biography from Wikipedia, available under CC BY-SA 4.0.
Also born on April 12
- Claire Danes1979 · American actor
- Saoirse Ronan1994 · American-born Irish actress
- Tulsi Gabbard1981 · American politician and military officer
- David Letterman1947 · American comedian and television host
- Shannen Doherty1971 · American actress
- Jennifer Morrison1979 · American actress and director
- Andy Garcia1956 · American actor
- Ed O'Neill1946 · American actor
Also born in 1577
- Peter Paul Rubens1577 · Flemish artist and diplomat
- Nur Jahan1577 · Padshah Begum of the Mughal Empire
- Beatrice Cenci1577 · Roman noblewoman
- Jan Baptist van Helmont1577 · Chemist and physician
- Dmitry Pozharsky1577 · Russian prince
- Robert Burton1577 · English scholar and author
- Scipione Borghese1577 · Italian Cardinal, art collector and patron of the arts
- Piet Pieterszoon Hein1577 · Dutch admiral