List showing descent from Charlemagne to .
Main Succession
editHouse of Nantes
editAssuming Amaudru, daughter of Charlemagne through his wife Himiltrude, is illegitimage, after Charlemagne's death in 814 the cognatic heir is Adelaide, daughter of Pepin of Italy, who is last mentioned 810.
- Adelaide, 814-?, granddaughter of Charlemagne
- Guy I, ?-860, son of Adelaide
- Lambert, 860-880, son of Guy I
- Guy II, 880-882, son of Lambert I
- Guy III, 882-897, son of Guy II
- Itta, 897-?, daughter of Guy II