Halfdan the Mild/Ancestors

A list of Halfdan's known ancestors is as follows:
 * Halfdan Eysteinsson (Halfdan the Mild in Wikipedia)
 * Eystein Halfdansson (Eystein Halfdansson in Wikipedia)
 * Halfdan Olifsson Hvitbeinn (Halfdan Hvitbeinn in Wikipedia)
 * Olof Ingjaldsson Trätälja (Olof Trätälja in Wikipedia)
 * Ingjald Onundsson Braut (Ingjald in Wikipedia)
 * Onund Ingvarsson Braut
 * Ingvar Eysteinsson
 * Eystein Adilsson
 * Adils Ottarsson
 * Ottar Egilsson
 * Egil Aunsson
 * Aun Jorundsson (c509-?)
 * Jorund Yngvasson (c487-?)
 * Yngvi Alreksson
 * Alrek Agnasson
 * Agne (Agne in Wikipedia) #5
 * Skjálf
 * Frosti #6
 * Dagreid Dagsdotter
 * Dag #7
 * Yrsa Helgasdatter
 * Helgi Halfdansson
 * Halfdan Frodasson (c503-?)
 * Frodi Fridleifsson (c479-?)
 * Fridleif Frodasson (c456-?)
 * Frodi Dansson (c433-?)
 * Dan Olafsson (c412-?)
 * Olaf Vermundson (c391-?)
 * Vermund Frodasson (c369-?)
 * Frodi Havarsson (c347-?)
 * Haver Fridleifsson (c325-?)
 * Fridleif Frodasson (c303-?)
 * Frodi Fridleifsson (c281-?)
 * Fridleif Skjoldsson (c259-?)
 * Skjöldr (Skjöldr in Wikipedia) #8
 * Gefion
 * Danpi
 * Sigris
 * Gauthild Algautsdotter
 * Algaut Gautreksson
 * Gautrek Gautsson
 * Gaut ?
 * Solveig Halfdansson
 * Halfdan Solfasson
 * Solfi Solfarsson
 * Solfar Solvason
 * Solve ?
 * Bertrade De Pruem
 * Theuderic III Of The Franks (Theuderic III in Wikipedia) #9
 * Clotilda Of Heristal
 * Ansegisel of Metz
 * Arnulf of Metz (Arnolf of Metz in Wikipedia) #10
 * Doda ? (c584-?)
 * Begga of Landen (615-693) (Begga in Wikipedia) #11
 * Asa Eysteinsdatter
 * Eystein ?
 * Hilda Eriksdatter
 * Eirik Agnarsson
 * Agnar Sigtrygsson
 * Sigtryg of Vendil