The Light Novel series is the source material for the adaptation of the Anime and Manga series. The information and terminology on the article will be based on the source material rather than the adaptions.
Having grown up in a very distant rural province, Helfried has a very relaxed personality and is quite happy to socialise with commoners. When visiting Ehrenfest, he is able to put on the mask of nobility so that he fits in, though after prolonged stays in his home that switch to his proper noble persona doesn't come naturally and requires some prodding from the head-attendant of his winter mansion.
Helfried was born and raised in Illgner. Soon after coming of age, his father died and he became the giebe. Other nobles tried to use his inexperience to take over the province by marrying his sister, Brigitte. Brigitte cancelled her engagement to stop this from happening however this caused her former finace Hassheit to work against Illgner and cause trouble for Giebe Illgner and the province.
Helfried met Rozemyne during winter socialising where she proposed visiting Illgner to make paper, as the province has a large lumber industry. Rozemyne ended up visiting the next summer and leaves behind Lutz, Gil, Damian and four grey priests to teach the locals how to make paper as well as research new paper. During this time, Giebe Illgner threw a large barbecue feast for her where he and his family happily interacted with their commoners showing their close relationship.
- He is on very good terms with his sister Brigitte.
- Ascendance of a Bookworm. Fanbook 2. Q&A with Miya Kazuki
- Ascendance of a Bookworm. Part 3 Volume 3. Chapter 6: A Tea Party
- Ascendance of a Bookworm. Part 3 Volume 4. Chapter 13: Illgner's Brigitte
- Ascendance of a Bookworm. Part 3 Volume 5. Two Marriages
- Ascendance of a Bookworm. Part 3 Volume 1. Chapter 10: Starbind Ceremony in the Noble's Quarter