Year 1390 was a common year starting on Saturday (link will display full calendar) of the Julian calendar. Events Robert III succeeds his father, Robert II, as King of Scotland. Henry III succeeds his father, John I, as King of Castile and León. John VII Palaiologos overthrows his grandfather, John V Palaiologos, as Byzantine Emperor. John V Palaiologos is restored later in the year by his son, Manuel, and the Republic of Venice. The Ottomans take Philadelphia, the last Byzantine enc… (More on 1390)