The following individual does not have a valid birth date and could not be added: King of Troy Tros (I4502)
King Athelstan (924 - 939)
King Edmund (939 - 946)
King Edred (946 - 955)
King Edwy (Eadwig) (955 - 959)
King Edgar (959 - 975)
King Edward The Martyr (975 - 978)
King Aethelred II The Unready (978 - 1016)