Prince Ulrik John of Denmark was the song of Frederick II of Denmark, the King of Denmark and which other country?
Frederick II of Denmark Frederick II (1 July 1534 – 4 April 1588) was King of Denmark and Norway and duke of Schleswig from 1559 until his death.
Langø Langø is an island in Denmark. It is situated in the Ulvsund between Sjælland und Møn