988 to 1014 A.D., son of Harald I Bluetooth (whom Sven dispossessed of the crown).
Sven was king of Denmark and a master of robbery and pillage. Chances are that he coined the famous phrase: "let´s go pillage, harrrrrrrrrrrrr!"
But on the other hand Sven had a tender disposition and clung to his childhood. His double axe, was a fake. In reality it was a a baby rattle which he kept in memory of his big-boobied nanny (and first love) Frida. By the way, the rattle did a good job confusing his enemies in battles.
The education of little vikings started at a very young age. Even viking babies & toddlers became aquainted playfully to axes by giving them soft axe rattles.... new herzensart design: "axe rattle for little viking warriors"