Translation of "Ragnar's" in Dutch

Ragnar's joke was on King Ella and Vöggr’s joke is on King Hjorvard.

Ragnars grap ging over koning Ella en Vöggr's grap ging over koning Hjorvard.

Would be that the whole story of Ragnar's death in the snake pit was made up later on

zou zijn dat het hele verhaal van Ragnars dood in de slangenkuil later werd verzonnen