Sons of emperors

King of Castile

French prince (1856–1879)

Duke of Bavaria (1727-1777)

Austrian cardinal and governor of the Netherlands (1559-1621)

Grand Duke of Tuscany (1769-1824)

British soldier (1900–1974), Governor-General of Australia from 1945 to 1947

Bulgarian ruler

King of Leon and Galicia (1137-1188)

9th-century Frankish king

King of Galicia and then Leon (c.873–924)

Bulgarian ruler

Indian prince

German king (1220-1235)

Aragonese king

Austrian archduke (1558-1618)

King of Leon (871-914)

King of León from 931 to 951

emperor of the Tang Dynasty

Austrian archduke, archbishop of Cologne

King of Asturias, León and Galicia

Bulgarian ruler

King of León

Austrian cardinal

Austrian archduke. (1529-1595)

Frankish prince, son of Charlemagne

Member of the House of Hohenzollern (1862–1929)

King of León (c.1017–1037) (r.1028-1037)

member of the Austrian dynasty; imperial regent of the German Empire (1848 to 1849)

Bulgarian tsar

Austrian nobleman (1553-1595)

King of Provence

King of Pamplona from 925 to 970

emperor of the Tang Dynasty

King of Galicia and León

King of Pamplona from 1034 to 1054

Bulgarian tsar

Son of King George V

Kaidu (; Middle Mongol: , Modern Mongol: , Khaidu ; c. 1235 – 1301) was a grandson of Ögedei Khan (1186–1241) and thus leader of the House of Ögedei and the de facto khan of the Chagatai Khanate, a division of the Mongol Empire. He ruled parts of modern-day Xinjiang and Central Asia during the 13th century, and actively opposed his cousin, Kublai, who established the Yuan dynasty. Medieval chroniclers often mistranslated Kadan as Kaidu, mistakenly placing Kaidu at the Battle of Legnica. Kadan was the brother of Güyük, and Kaidu's uncle.

Emperor of the Serbs

Austrian archduke, founder of the House of Austria-Este

second son of Charlemagne

Zwentibold (Zventibold, Zwentibald, Swentiboldo, Sventibaldo, Sanderbald; – 13 August 900), a member of the Carolingian dynasty, was the illegitimate son of Emperor Arnulf. In 895, his father granted him the Kingdom of Lotharingia, which he ruled until his death.

King of Galicia

Count of Hainaut, Holland and Zeeland (1336-1404)

German king

archduke of Austria (1776-1847)

Austrian archduke (1783-1853)

Bulgarian ruler

German prince and high ranking Nazi (1887-1949)

King of Aquitaine from 855

Tsar of Bulgaria from 1014 to 1015

Austrian archduke (1614-1662)

French politician (1810-1868)

German prince (1884-1948)

Byzantine emperor

duke of Swabia

Bulgarian ruler

Prussian prince (1890-1920)

Bulgarian ruler

Prussian prince (1883–1942)