King Magnus, immediately after the death of father, had commissioned the Icelander Sturla Pórdarson to write his father's saga, or biography.

He had in 1278 commissioned the same man to write his own saga.

The Saga of Magnus the lawmender (Magnúss saga lagabœtis) thus becomes the last of the medieval Norwegian kings' sagas; unfortunately only a short fragment of it has been preserved.

Magnus falls ill in Bergen in the spring of 1280 and dies on May 9.

He had already planned to have his son Eirik crowned at midsummer as co-ruler, instead Eirik now takes over as sole king at the age of twelve.

Real power falls to a circle of advisors, prominent among them Magnus' queen Ingeborg.

Magnus is remembered as a good ruler, who ruled by law rather than by the sword.

Some modern historians have considered him a weak king, for giving up the Hebrides and giving in to demands of the church, but others consider these wise policies, sparing the kingdom unnecessary and unfruitful wars abroad, while preserving stability at home.

Magnus is buried in the church of the Franciscan monastery in Bergen, which has since the sixteenth century been the Bergen Cathedral (Bergen Domkirke).

Northwest Europe (1288–1299 CE): Succession, Warfare, and Legal Innovation

England: Continued Consolidation and Scottish Intervention

Edward I continued to strengthen his dominion, increasingly asserting influence over Scotland following the Scottish succession crisis after Alexander III's death. In 1290, the death of Margaret, Maid of Norway, Alexander's granddaughter and last heir, left Scotland without a direct ruler, prompting Edward I to arbitrate among competing Scottish nobles in the Great Cause (1291–1292). Edward selected John Balliol as King of Scots, but his heavy-handed interference led to widespread Scottish resentment and rebellion, culminating in open conflict and Edward's invasion of Scotland in 1296. Edward decisively defeated Scottish forces at the Battle of Dunbar, captured Edinburgh, and temporarily subdued Scotland, seizing the symbolic Stone of Scone.

Scotland: Crisis and National Resistance

The period after 1288 was dominated by Scotland's succession crisis, foreign intervention, and resistance. After Edward's conquest and subjugation of Scotland in 1296, William Wallace emerged as a leader of national resistance, famously defeating English forces at the Battle of Stirling Bridge in 1297. However, Wallace's subsequent defeat at the Battle of Falkirk in 1298 restored temporary English dominance, prolonging the struggle for Scottish independence.

Ireland: Persistent Gaelic-Norman Rivalries

Norman influence remained dominant around major coastal towns, while the Gaelic Irish persistently resisted Norman expansion in Ulster and Connacht. This period was marked by continuous clashes, reinforcing the pattern of fragmented control and limiting effective Norman centralization.

Denmark: Turmoil and Royal Intrigue

The reign of Eric V Klipping ended abruptly when he was assassinated in 1286, plunging Denmark into internal conflict. His successor, Eric VI Menved, took the throne amid accusations and political intrigue, dealing with prolonged internal rebellions and disputes with neighboring principalities throughout the decade. Nonetheless, he strove to strengthen royal authority and stability through legal reforms and administrative consolidation.

Norway: Haakon V and Continued Legal Advances

Following the death of Magnus VI Lagabøte in 1280, Norway transitioned through the brief reign of Eric II Magnusson (1280–1299), and subsequently his brother Haakon V. Haakon continued Magnus's emphasis on strengthening royal authority and administrative structures, furthering the establishment of a robust and centralized monarchy.

Iceland: Cultural and Political Resilience

Despite continued Norwegian dominance, Icelandic intellectual and literary traditions flourished. The Althing, though influenced by external powers, continued to function as a crucial institution, embodying Iceland's cultural resilience and autonomy. Saga literature, including the widespread circulation of works like Njal's Saga and the Völsunga saga, remained central to Icelandic identity and cultural expression.

Economic and Urban Development

Economic growth persisted across Northwest Europe, driven by dynamic trade in wool, timber, and luxury goods. Major cities—London, Bruges, Bergen, and Dublin—continued their infrastructural and commercial expansion, serving as thriving hubs of trade and cultural exchange.

Religious and Scholarly Influence

The influence of mendicant orders like the Dominicans and Franciscans remained strong, enhancing educational and religious life. Intellectual activity continued, building upon the earlier contributions of Roger Bacon and Robert Grosseteste, with scholastic traditions influencing emerging academic communities across Northwest Europe.

Literary and Cultural Flourishing

The popularity of Middle English romances such as Havelok the Dane signaled ongoing literary development, emphasizing themes of ideal kingship, social justice, and the lived experiences of everyday people, reflecting a complex and increasingly sophisticated literary culture.

Legacy of the Era

By 1299 CE, Northwest Europe had experienced significant developments: the turbulent conquest and rebellion in Scotland, the continuing Gaelic resistance in Ireland, internal strife in Denmark, the enduring Norwegian commitment to legal centralization, and Iceland’s robust cultural legacy. Collectively, these factors underscored the ongoing transformation toward powerful, centralized states and distinct national identities, setting the stage for later medieval developments.