Douglas Richardson provides an Appendix in Volume V of Royal Ancestrywhich provides five documented lines of Descent from Charlemagne to William the Conqueror or to his wife Maud. One of these (Line A) is to William the Conqueror and the other four are to Maud.
Line A:
- Charlemagne, 747-818
- Pepin (Carloman), 777-811
- Bernard, 797-818
- Pepin, 815-850
- Heribert I, 850-906
- Heribert II, 880-943
- Robert 931-968
- Adele 950-984
- Ermengarde 966-992
- Judith 982-1017
- Robert 1000-1035
- William 1027-1087
Line B:
- Charlemagne, 797-818
- Louis
- Charles II
- Judith
- Baudouin II
- Arnulf
- Baudouin III
- Arnulf II
- Baudouin IV
- Baudouin V
- Maud
Line C:
- Charlemagne, 797-818
- Louis
- Lothair I
- Lothair II
- Bertha
- Boso
- Willa
- Suzanne
- Baudouin IV
- Baudouin V
- Maud
Line D:
- Charlemagne, 797-818
- Louis
- Gisela
- Berengario I
- Gisela
- Berengario II
- Suzanne
- Baudouin IV
- Baudouin V
- Maud
Line E:
- Charlemagne, 797-818
- Louis
- Charles II
- Louis II
- Ermentrude
- Cunegonde
- Sigefroid
- Giselbert
- Otgive
- Baudouin V
- Maud
- Douglas Richardson. Royal Ancestry: A Study in Colonial and Medieval Families, 5 vols, ed. Kimball G. Everingham (Salt Lake City: the author, 2013), volume V, pages 481-504 APPENDIX.