Former Owner
- William Bragge5
- William Burdett-Coutts1
- William Cecil, 1st Baron Burghley1
- William E. S. (William Edward Seaver) Whitman1
- William Foyle1
- William Harcourt Hooper1
- William Hargrave Dawson1
- William Inglis Morse1
- William Keeney Bixby3
- William Lymnor of Sharrington1
- William Maskell1
- William Morris1
- William Ralph Inge1
- William Taylor Scheide5
- William Thynne1
- William Tyssen-Amherst, 1st Baron Amherst of Hackney1
- Wolfgang Sigismund, Graf von Gallenberg1
- Wyndham Francis Cook1
- Yāsīn ibn ʻAbd al-Wahhāb al-Siṭrābī1
- al-Ḥājj ʻAbd al-Qādir ibn al-Sayyid ʻAbd Allāh al-Asṭawānī1