Question: What is the name of the king who ruled in the South West of England, and became the ruler of Mercia upon the death of his sister?
Sentence (from "Ceolwulf II of Mercia"): By 883, he had been replaced by Æthelred, Lord of the Mercians, who became ruler of Mercia under the lordship of Alfred the Great, king of Wessex.
Relevant evidence: No