Abt 884, when she was about 16, Athelfled, the Lady of the Mercians, married Ealdorman Athelred, created "Lord of the Mercians" by her father, Alfred the Great. As Athelred's health declined, she took over many of the administations for him, and continued the campaign against the Welsh.
Aelfthryth, also known as Elfrida, (d. 929), was the third and last child of Alfred the Great, the Saxon King of England.
She married Baldwin II (d. 918), Count of Flanders. One of their descendants, Matilda of Flanders (d. 1083), would go on to marry William the Conqueror, therefore starting the Anglo-Norman line of Kings of England. Through her descendant, Henry I of England, she is also a direct ancestor of the current monarch of the United Kingdom of Great Britain and Northern Ireland, Elizabeth II.
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The second wife of King Charles III of France. When Charles was desposed and taken prisoner by Count Herbert II of Vermandois, an ally of the new king, Robert of Neustria. Charles was held in a castle at Peronne, where he died. Aedgifu took her son, Louis to Englnad for safety, to stay in the court of her half brother, Aethelstan. This gave Louis his nickname, d'Outrmemr (overseas). Louis returned to France to be crowned, and Aedgifu went with him. She then retired to a convent in Laon, but left to marry the man who had taken her husband prisoner, Count Herbert.