John (of Castile I and Le

King of Castile and León (1379–90), the son of Henry II of Castile. He attacked Portugal to defeat the alliance created by King Ferdinand of Portugal and John of Gaunt, who had a claim to the throne of Castile through his wife. Ferdinand made peace in 1382 and gave his daughter to John I in marriage. After Ferdinand's death (1383), John I again made war with Portugal, but was defeated at Aljubarrota (1385). He appeased John of Gaunt by arranging the marriage between his own son, the future King Henry III of Castile and León, with one of John's daughters.

King John I of France (1316 November 15 – 1316 November 20), king of France for the five days he lived King John I of Castile (1358–1390), king of Castile, the son of Henry II and of his wife Joan King John of Scotland (circa 1249–ca 1313), also John, King of Scots, was the de facto king of Scotland from 1292 until 1296 King John I of Portugal (1357–1433), king of Portugal from 1385 to 1433 John of Denmark, King of Denmark (1481–1513), Norway (1483–1513), and Sweden (1497–1501) John of Brienne (circa 1148–1237), also John I of Jerusalem, king of Jerusalem and Latin emperor-regent of Constantinople King John II of Jerusalem (1259–1285), also John I of Cyprus, king of Cyprus from 1284 to 1285 Emperor John I Tzimisces (circa 925–976), was East Roman Emperor from 969 to 976 Yohannes I of Ethiopia, Emperor of Ethiopia (1667–1692), is sometimes known as John I John I of Amalfi (died 1007) was Prince of Salerno from 981 to 983 and Duke of Amalfi from 1004 to his death John I of Gaeta (died 933) was Duke of Gaeta from 877 to his death John I of Naples (died 719) was Duke of Naples from 711 to his death John, Duke of Burgundy (reigned 1404-19) John I, Duke of Bourbon (1381–1434), was Duke of Bourbon from 1410 to 1434 and Duke of Auvergne from 1416 to 1434 John I, Duke of Brabant (1253–1294), also called John I the Victorious, was Duke of Brabant from 1267 to 1294 and Dukeof Limburg from 1288 to 1294) and Duke of Lorraine John I, Duke of Brittany (1217–1286), also known as "the Red" (le Roux) due to the colour of his beard, was Duke of Brittany from 1237 to 1286 John I, Duke of Lorraine (1346–1390), was Duke of Lorraine from 1346 to 1390 John I, Count Palatine of Zweibrücken was Count Palatine and Duke of Zweibrücken 1559–1604 John I, Count of Hainaut (1218–1257), was Count of Hainaut from 1246 to 1257 John I, Count of Holland (1284–1299), was Count of Holland from 1296 to 1299 John I, Count of Luxemburg (1296–1346), was king of Bohemia from 1310 to 1346 and Count of Luxemburg John I of Ponthieu was Count of Ponthieu 1147–1191 Johann I Josef, Prince of Liechtenstein (ruled 1805–1806 and 1814–1836)