Charles I of Naples
The name survives into the High Middle Ages (Charles, Duke of Lower Lorraine; Charles, Count of Valois; Charles I, Count of Flanders (Charles the Good, beatified in 1882); Charles I of Naples; Charles I of Hungary). Karl Sverkersson was a king of Sweden in the 12th century, counted as "Charles VII" due to a genealogical fiction of the 17th century by Charles "IX", but actually the first king of Sweden with this name.