British and Irish History: Biographies
- William Huskisson
- William I (England)
- William I (the Conqueror)
- William I (the Lion)
- William II (England)
- William III (England)
- William IV
- William Jefferson Hague
- William Joseph Slim 1st Viscount Slim
- William Kidd
- William Lamb 2d Viscount Melbourne
- William Maitland
- William Marshal
- William Marshal 1st earl of Pembroke
- William Maxwell Aitken 1st Baron Beaverbrook
- William of Longchamp
- William of Wykeham
- William Petty
- William Petty Fitzmaurice 2d earl of Shelburne
- William Pitt