In the view of Ann Williams, "though he accepted West Saxon overlordship, Æthelred behaved rather as a king of Mercia than an ealdorman", and Charles Insley states that Mercia remained an independent kingdom until 920. To the Welsh and Irish looking east, Mercian rulers still kept all their old regality until Æthelflæd's death in 918, and Nick Higham argues that: "Celtic visions of Æthelred and Æthelflæd as king and queen certainly offer a different, and equally valid, contemporary take on the complex politics of this transition to a new English state."