The name Heidrun is a girl's name of Norse origin. Heidrun and discussed in our forums with posts like "Choose Their Stage Names".
From the experts:
Heidrun, which is occasionally used in modern Europe, was the name of a mythological goat who nibbled from the tree of life, transforming her milk into mead. You might think of Heidrun as a cross between Heidi and Gudrun, but there's a good reason this one's never caught on in the US: It's still stuck on that mythical Norse hillside.