Gudren was the handmaiden of Katherine von Swartzschild.
At the young age of 15, Katherine became very ill and was presumed to die. Unbarring to watch her suffer, Gudren paid a desperate visit to Klaus and asked him to cure her. Although Katherine had no say in the matter, Klaus agreed to help by transforming her into a vampire.
- In the TV series, Gudren’s character was replaced by Emily Bennett.
- While Gudren was human in the books, Emily was a witch in the TV series.
- Gudren helped Katherine fake her own death in the books, while Emily protected the vampires by imprisoning them inside of a tomb.
- Gudren refers to Katherine as "mistress Katerina".