There are various references listing Edward the Elder's birth as sometime in the 870s, being the second child of a marriage of 868. There are no sources listing his birth as after 877. Anglo-Saxons.net: Edward the Elder. URL last accessed on 15 Maret 2007.
Ethelred the Unready was forced to go into exile in the summer of 1013, following Danish attacks, but was invited back following Sweyn Forkbeard's death. AETHELRED (the Unready) @ Archontology.org. URL last accessed 17 Maret 2007
After reigning for approximately 9 weeks, Edgar the Atheling submitted to William the Conqueror, who had gained control of the area to the south and immediate west of London. "Eadgar (the Ætheling) - Archontology.org". Diakses tanggal 2007-10-26.