the building of the Hexamilion (six-mile wall) across the Isthmus of Corinth, intended to defend the Peloponnese from the Ottomans. Manuel II stood on friendly terms with the victor in the Ottoman civil war, Mehmed I (1402–1421), but his attempts to meddle in the next contested succession led to a new assault on Constantinople by Murad II (1421–1451) in 1422. During the last years of his life, Manuel II relinquished most official duties to his son and heir John VIII Palaiologos, and went back to the West searching for assistance against the Ottomans, this time to the King Sigismund of Hungary, staying for two months in his court of Buda. Sigismund (after suffering a defeat against the Turks in the Battle of Nicopolis in 1396) never rejected the possibility of fighting against the Ottoman Empire. However, with the Hussite wars in Bohemia, it was impossible to count on the Czech or German armies, and the Hungarian ones were needed to protect the Kingdom and control the religious conflicts. Unhappily Manuel returned home with empty hands from the Hungarian Kingdom, and in 1424 he and his son were forced to sign an unfavourable peace treaty with the Ottoman Turks, whereby the Byzantine Empire had to pay tribute to the sultan. Death Manuel II was paralyzed by a stroke on 1 October 1422, but his mind was unaffected and he continued to rule for three more years. He lived his last few days as a monk, taking the name of Matthew. He died on 21 July 1425, aged 75, and was buried at the Pantokrator Monastery in Constantinople. Writings Manuel II was the author of numerous works of varied character, including letters, poems, a Saint's Life, treatises on theology and rhetoric, and an epitaph for his brother Theodore I Palaiologos and a mirror of princes for his son and heir John. This mirror of princes has special value, because it is the last sample of this literary genre bequeathed to us by Byzantines. Family By his wife Helena Dragas, the daughter of the Serbian prince Constantine Dragas, Manuel II Palaiologos had several children, including: A daughter. Mentioned as the eldest daughter but not named. Constantine Palaiologos. Born ca. 1393/8, died before 1405 in Monemvasia. John VIII Palaiologos (18 December 1392 – 31 October 1448). Byzantine emperor, 1425–1448. Andronikos Palaiologos, Lord of Thessalonica (d. 1429). A second daughter. Also not named in the