Following the events at Scone, there is little of substance reported for a decade. A story in the
Fragmentary Annals of Ireland, perhaps referring to events sometime after 911, claims that
Æthelflæd, who ruled in
Mercia, allied with the
Irish and northern rulers against the Norsemen on the Irish sea coasts of
Northumbria. The
Annals of Ulster record the defeat of an Irish fleet from the kingdom of
Ulaid by Vikings "on the coast of England" at about this time. In this period the
Chronicle of the Kings of Alba reports the death of
Cormac mac Cuilennáin,
king of Munster, in the eighth year of Constantine's reign. This is followed by an undated entry which was formerly read as "In his time Domnall [i.e. Dyfnwal], king of the [Strathclyde] Britons died, and Domnall son of Áed was elected". This was thought to record the election of a brother of Constantine named Domnall to the kingship of the Britons of Strathclyde and was seen as early evidence of the domination of Strathclyde by the kings of Alba. The entry in question is now read as "... Dyfnwal ... and Domnall son Áed
king of Ailech died", this
Domnall being a son of
Áed Findliath who died on 21 March 915. Finally, the deaths of
Flann Sinna and
Niall Glúndub are recorded. There are more reports of Viking fleets in the
Irish Sea from 914 onwards. By 916 fleets under
Sihtric Cáech and
Ragnall, said to be grandsons of Ímar (that is, they belonged to the same
Uí Ímair kindred as the Ímar who was killed in 904), were very active in
Ireland. Sihtric inflicted a heavy defeat on the armies of
Leinster and retook Dublin in 917. The following year Ragnall appears to have returned across the Irish Sea intent on establishing himself as king at
York. The only precisely dated event in the summer of 918 is the death of Æthelflæd of Mercia on 12 June 918 at
Tamworth, Staffordshire. Æthelflæd had been negotiating with the Northumbrians to obtain their submission, but her death put an end to this and her successor, her brother
Edward the Elder, was occupied with securing control of
Mercia. ; Corbridge is just south of
Hadrian's Wall in the centre of the map The northern part of
Northumbria, and perhaps the whole kingdom, had probably been ruled by
Ealdred son of
Eadulf since 913. Faced with Ragnall's invasion, Ealdred came north seeking assistance from Constantine. The two advanced south to face Ragnall, and this led to a battle somewhere on the banks of the
River Tyne, probably at
Corbridge where
Dere Street crosses the river. The
Battle of Corbridge appears to have been indecisive; the
Chronicle of the Kings of Alba is alone in giving Constantine the victory. The report of the battle in the
Annals of Ulster says that none of the kings or
mormaers among the men of Alba were killed. This is the first surviving use of the word mormaer; other than the knowledge that Constantine's kingdom had its own bishop or bishops and royal villas, this is the only hint to the institutions of the kingdom. After Corbridge, Ragnall enjoyed only a short respite. In the south, Alfred's son Edward had rapidly secured control of Mercia and had a
burh constructed at
Bakewell in the
Peak District from which his armies could easily strike north. An army from
Dublin led by Ragnall's kinsman Sihtric struck at north-western Mercia in 919, but in 920 or 921 Edward met with Ragnall and other kings. The
Anglo-Saxon Chronicle states that these kings "chose Edward as father and lord". Among the other kings present were Constantine, Ealdred son of Eadwulf, and the king of Strathclyde,
Owain ap Dyfnwal. Here, again, a new term appears in the record, the
Anglo-Saxon Chronicle for the first time using the word
scottas, from which Scots derives, to describe the inhabitants of Constantine's kingdom in its report of these events. Edward died in 924. His realms appear to have been divided with the West Saxons recognising
Ælfweard while the Mercians chose
Æthelstan who had been raised at Æthelflæd's court. Ælfweard died within weeks of his father and Æthelstan was inaugurated as king of all of Edward's lands in 925. == Æthelstan ==