Aelfwynn

Aelfwynn was the only daughter of Earl Aethelred of Mercia and his wife and successor Ethelfleda. She joined her mother as "lady of the Mercians" in 918. She succeeded to the throne with the death of her co-ruler later that same year.

Mercia was claimed by her maternal uncle Edward the Elder of the Kingdom of England in 919. She was easily deposed. There never was another Lady of the Mercians. Edward used Mercia to expand his empire.