Al-Kamil (Nasir al-Din Muhammad)
Sultan of Egypt
1177 – 1238
- Born
- 1177
- Died
- 1238
- Reign
- 1218 – 1238
- House
- Ayyubid Dynasty
Biography
Nasir al-Din Muhammad al-Kamil, son of al-Adil I, ruled Egypt through two crusades and resolved the second of them with the most controversial treaty of the era. Born around 1177, he was groomed for power from youth — knighted, curiously, by Richard I of England during the diplomatic interludes of the Third Crusade, if the chronicler's report is to be believed — and governed Egypt as his father's viceroy from 1200, gaining long experience of the Nile's administration, its Coptic bureaucracy, and its Italian trading partners.
He inherited the sultanate in August 1218 at the worst possible moment, with the Fifth Crusade encamped against Damietta. The war that followed consumed his reign's first years. Damietta fell to the crusaders in November 1219 despite his repeated offers to trade Jerusalem itself for their withdrawal — terms the papal legate Pelagius refused. It was during this siege that Francis of Assisi crossed the lines and was received courteously by the sultan, an encounter that became legendary in both traditions. When the crusade finally marched on Cairo in 1221, al-Kamil let the rising Nile and opened sluices do the fighting; trapped in the flooded Delta, the crusader army capitulated and evacuated Egypt entirely.
The Sixth Crusade he defused without a battle. Entangled in a power struggle with his brother al-Mu'azzam of Damascus, al-Kamil had invited the emperor Frederick II to the Levant as a counterweight; when Frederick arrived in 1228, excommunicate and militarily weak, the two rulers negotiated rather than fought. By the Treaty of Jaffa of February 1229, al-Kamil ceded Jerusalem, Bethlehem, and a corridor to the coast to the emperor for ten years, retaining the Haram al-Sharif and its sanctuaries under Muslim control. Religious opinion on both sides condemned the bargain; both rulers judged an unfortified Jerusalem worth the peace it purchased.
His later years were spent enforcing seniority over the family confederation, taking Damascus from his kinsmen in 1238 shortly before his death there in March of that year. A patron of scholars who attended hadith readings and founded the Dar al-Hadith al-Kamiliyya in Cairo, al-Kamil left the dynasty at its height — and a succession contest between his sons al-Adil II and as-Salih Ayyub that began its unraveling.
Updated June 2026 · How we research
Events
In February 1229 the Ayyubid sultan of Egypt, al-Kamil, and the emperor Frederick II concluded an agreement at Jaffa that returned Jerusalem to Christian hands without a battle. Frederick had arrived in the East in 1228 under excommunication, having repeatedly delayed his promised crusade, and commanded a force far too small for serious conquest. Al-Kamil, for his part, was preoccupied with a power struggle among the Ayyubid family confederation, above all with his nephew an-Nasir Dawud, who held Damascus. The sultan had earlier dangled Jerusalem before Frederick as the price of an alliance, and although the political situation had shifted by the time the emperor landed, months of negotiation produced a settlement. The treaty established a truce of ten years and restored Jerusalem, Bethlehem, and Nazareth to the Latin kingdom, together with a corridor connecting Jerusalem to the coast. The terms were carefully hedged: the Haram al-Sharif, with the Dome of the Rock and al-Aqsa Mosque, remained under Muslim custody with free access for Muslim worship, the city's walls had already been dismantled and its defensibility remained limited, and outlying Muslim villages were excluded from Latin jurisdiction. Both principals were denounced by their own sides. Preachers in Damascus mourned the surrender of the holy city, which an-Nasir Dawud used against his uncle, while the Latin patriarch placed Jerusalem itself under interdict because the excommunicate emperor had recovered it; Frederick wore the crown in the church of the Holy Sepulchre in March 1229 in a ceremony without clergy, then left the East within weeks as war against his Italian lands loomed. The arrangement nevertheless held roughly to its term. Latin Jerusalem survived precariously until 1244, when Khwarazmian horsemen in Ayyubid service sacked the city, ending Christian rule there permanently.
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