Tyra of Denmark was a 10th-century Danish princess. She was the wife of both King Olav I of Norway and of Styrbjörn Starke, prince of Sweden.
Other sources
• Alf Henrikson: Dansk historia (Danish history) (1989) • Sven Rosborn: När hände vad i Nordens historia (When did what happen in the history of the Nordic countries) (1997) • Åke Ohlmarks: FornNordiskt Lexikon (Ancient Nordic dictionary) (1994) ==External links==