Coronation of the British monarch of their accession. Edward I was fighting in the Ninth Crusade when he acceded to the throne in 1272; he was crowned soon after his return in 1274. Edward II's coronation, similarly, was delayed by a campaign in Scotland in 1307. Henry VI was only a few months old when he acceded in 1422; he was crowned in 1429, but did not officially assume the reins of government until he was deemed of sufficient age, in 1437. Pre-modern coronations were usually either on a Sunday, the Christian Sabbath, or on a Christian holiday. Edgar's coronation was at Pentecost, William I's
Rise of the Ottoman Empire the interregnum. When Mehmed died in 1421, one of his sons, Murad, became sultan. Murad II spent his early years on the throne disposing of rivals and rebellions, most notably the revolts of the Serbs. He also had problems at home. He subdued the rebels of his uncle Mustafa Çelebi and brother Küçük Mustafa. In 1422, Murad II laid siege to Constantinople for several months and lifted it only after forcing the Byzantine emperor, Manuel II Palaiologos to pay additional tribute. In 1422 the first regular war against Venice began with the Siege of Thessalonica (1422–30). Byzantine involvement in the