Name: Olav IV Håkonsson of Norway, Oluf 2 of Denmark
Child of: Håkon VI of Norway and Margrete of Denmark
Reign: Denmark: 1376-1387 Norway: 1380-1387
Throne passed to: Margrete I ->Eric of Pomerania
His mother was in talks with Sweden regarding Olav also becoming king there, but he passed away before it could become reality.
(Note: Also known as Olav/Olaf.)
King of Norway after his father's death. King of Denmark after his grandfather's death.