William I

William I may refer to:

Kings

• William I of England (c. 1028–1087) known as William the Conqueror
• William I of Sicily (died 1166)
• William I of Scotland (died 1214)
• William I of the Netherlands (1772–1843)
• William I, German Emperor (1797–1888)
• William I of Bimbia (fl. 1850s)

Nobles

• William I of Gascony (died 848).
• William I of Aquitaine (died 918).
• William I of Montferrat (fl. 924).
• William I of Normandy (c. 900–942).
• William I of Montpellier (fl. 980s).
• William I of Provence (c. 950–993).
• William I Talvas (c. 995–after 1030), seigneur of Alençon.
• William Iron Arm (before 1010–1046), Duke of Apulia.
• William I, Bishop of Utrecht (died 1076).
• William I, Count of Nevers (c. 1030–after 1083).
• William I, Count of Burgundy (1020–1087).
• William de Warenne, 1st Earl of Surrey (died 1088).
• William I of Cerdanya (1068–1095).
• William I of Bures (died 1142), French crusader.
• William I of Béarn (died 1173).
• William le Gros, 1st Earl of Albemarle (died 1179).
• William I of Geneva (fl. 1190s).
• William of Champlitte (died 1209), Prince of Achaea.
• William I of Cagliari (c. 1160–1214).
• William I, Count of Holland (c. 1167–1222).
• Uilleam I, Earl of Ross (died 1274).
• William I de la Roche (died 1287), Duke of Athens.
• William I, Count of Hainaut (1286–1337).
• William I, Duke of Bavaria (1330–1389).
• William I, Landgrave of Hesse (1466–1515).
• William I, Count of Nassau-Dillenburg (1487–1559).
• William the Silent (1533–1584), Prince of Orange.
• Guglielmo I Gonzaga (1538–1587), Duke of Mantua.
• William I, Elector of Hesse (1743–1821).
• William I of Württemberg (1781–1864).

cs:Vilém I.

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