List of Famous people named William

William, Count of Nassau-Siegen, German: Wilhelm Graf von Nassau-Siegen, official titles: Graf zu Nassau, Katzenelnbogen, Vianden und Diez, Herr zu Beilstein, was Count of Nassau-Siegen, a part of the County of Nassau from 1624 to 1642. A member of the House of Nassau-Siegen, a cadet branch of the Ottonian Line of the House of Nassau, he was a professional soldier who served in the armies of the Hanseatic League and the Republic of Venice, then with the Dutch States Army during the Eighty Years War. Promoted field marshal in 1633, he was successively governor of Emmerich, Heusden and Sluis.

William Cecil, 2nd Earl of Salisbury,, known as Viscount Cranborne from 1605 to 1612, was an English peer, nobleman, and politician.

William Neville, Earl of Kent KG and jure uxoris 6th Baron Fauconberg, was an English nobleman and soldier. He fought during the latter part of the Hundred Years War, and during the English dynastic Wars of the Roses.

Guillaume de Donjeon was a French Roman Catholic prelate who served as the Archbishop of Bourges from 1200 until his death. He served as a canon in Soissons and Paris before he entered the Order of Grandmont. Sometime later he entered the Cistercians. He was known to practice austerities such as abstaining from meat and wearing a hair shirt.

William Legge, 4th Earl of Dartmouth FRS, SA, styled The Honourable William Legge until 1801 and Viscount Lewisham between 1801 and 1810, was a British peer.

William I, called the Bad or the Wicked, was the second King of Sicily, ruling from his father's death in 1154 to his own in 1166. He was the fourth son of Roger II and Elvira of Castile.

The Reverend William Darwin Fox was an English clergyman, naturalist, and a second cousin of Charles Darwin.

William Louis of Nassau-Dillenburg was Count of Nassau-Dillenburg from 1606 to 1620, and stadtholder of Friesland, Groningen, and Drenthe.

William Douglas, 1st Marquis of Douglas and 11th Earl of Angus (1589–1660) was a Scottish nobleman.

William Wingfield KC, MP, was an attorney, judge, and Member of Parliament in 19th century England.