Æðelflæd of Wessex (c. 871-918) was the daughter of King Ælfræd (Alfred) the Great of Wessex, traditionally the first King of England. Æðelflæd was married to Æðelræd of Mercia as a teenager, and had one daughter. After Æðelræd's death, Æðelflæd ruled Mercia in her own right for seven years until her death.
Æðelflæd did not rule alone: her and Æðelræd's daughter, Ælfwynn of Mercia, was her co-ruler. Both women were titled "Lady of the Mercians". When Æðelflæd died, Ælfwynn ruled solo for one year until she was desposed by Eadweard (Edward) the Elder, King of England.
This name refers to Elfleda, which in turn refers back to ÆDHELFLÆD without a link. This is an error. It seems obvious that this is the original name, and that Elfleda is a derived name.
Æðelflæd did not rule alone: her and Æðelræd's daughter, Ælfwynn of Mercia, was her co-ruler. Both women were titled "Lady of the Mercians". When Æðelflæd died, Ælfwynn ruled solo for one year until she was desposed by Eadweard (Edward) the Elder, King of England.