Ummm...
Harald Bluetooth
"Marriages and children
Spouses:
Gunhild
Thora (Tova) the daughter of Mistivir in 970. She raised the Sønder Vissing Runestone after her mother.
Gyrid Olafsdottir
Children:
Tyra of Denmark, married Styrbjörn the Strong.
Sweyn Forkbeard. Born about 960. Usually given as the son of Harald and Gunhild, though it is said in some of the older sagas that he was an illegitimate son.
Haakon. Born in 961(?)
Gunhilde. She married Pallig, Jarl and Ealdorman of Devonshire. It is thought that they both died in the St. Brice's Day massacre in November 1002."
https://en.wikipedia.org/wiki/Harald_Bluetooth