An imagined portrait of Rhodri Mawr: a long-haired, bearded man in a patterned cloak over armour bearing a red dragon, holding a spear and a round shield, standing on a rocky mountain top above the sea.
Rhodri Mawr: an imagined portrait Image: David, Own work

In 878 Rhodri Mawr was killed by the English, together with his son Gwriad. The Annales Cambriae records their deaths at the hands of “the Saxons”, but gives no location. Documented: Annales Cambriae, death entry labelled 877 in the linked translation; dated 878 by J. E. Lloyd Historian J. E. Lloyd identifies Rhodri’s killers as Mercians. Documented: J. E. Lloyd, Dictionary of Welsh Biography, “Anarawd ap Rhodri”

The Battle

Three years later, in 881, the Mercians were defeated on the banks of the River Conwy. Lloyd identifies Rhodri’s son Anarawd, who had succeeded him in Gwynedd, as the victor. Documented: J. E. Lloyd, Dictionary of Welsh Biography, “Anarawd ap Rhodri”

The Annales Cambriae records the event in a few words:

The battle of Conwy. Vengeance for Rhodri at God's hand.

Documented: Annales Cambriae, Conwy entry labelled 880 in the linked translation; battle dated 881 by J. E. Lloyd

The short annal entry does not name either commander or identify the opposing army. It does, however, explicitly connect the battle with vengeance for Rhodri.

Sources

The Mercian army was probably led by Æthelred, Lord of the Mercians. A later Welsh genealogical account names the commander as “Edryd Long-Hair”, who is generally identified with Æthelred. Inferred

What Came After

Victory at Conwy was not the end of Anarawd’s dealings with the powers beyond Wales. Asser, writing his Life of King Alfred in 893, describes Anarawd and an unnamed brother abandoning their friendship with the Northumbrians and seeking Alfred’s support. According to Asser, that earlier friendship had brought Anarawd “no good but harm”. Documented: Asser, Life of King Alfred, chapter 80

Alfred received Anarawd honourably, gave him gifts and became his sponsor at confirmation. Asser says Anarawd then became subject to Alfred with all his people, on the same terms as Æthelred and the Mercians. Documented: Asser, Life of King Alfred, chapter 80

Further Reading