The Story of Eufemia
Once upon a time, back to the 14th century, Queen Eufemia lived at Rügen. It was then agreed that She has to be married with Håkon Magnusson. She was then sent to a very falsified area, called Bjørvika. What gave her courage, was her books. She brought her library with her, which was one of Europe's largest at that time.
So it is Queen Eufemia's library that gave the DNB Design System the name.