Charles IV, Holy Roman Emperor reigned as the king of Bohemia from 1346 until his death in 1378. In 1355, he became the first king of Bohemia to be crowned Holy Roman Emperor. Later, he was crowned king of Burgundy in 1365, making him the sole king of the Holy Roman Empire and all its kingdoms.
John I of Bohemia reigned as the King of Bohemia from 1310 to 1346. Considered a national hero in Luxembourg, John also served as the Count of Durbuy, Arlon, and Luxembourg. John I of Bohemia is also remembered as the father of Charles IV, who went on to become one of the most important Holy Roman Emperors.
Wenceslaus III became King of Hungary following the death of Andrew III whose only daughter, Elizabeth, was engaged to Wenceslaus. Wenceslaus renounced his hereditary rights to Austria and claim to Hungary before succeeding his father as King of Bohemia and Poland. His reign in Bohemia was however cut-short as he was assassinated before he could invade his rival's territories in Poland.
Initially the duke of Bohemia, Ottokar I later took over as the king of Bohemia. His title was confirmed by Frederick II’s famous decree, the Golden Bull of Sicily, and he became a member of the house of Přemysl. He had a major role to play in the development of towns in Bohemia.