Former Owner
- William Clarke1
- William Cumming Wilde1
- William Deys1
- William Douglas-Hamilton, 12th Duke of Hamilton1
- William Ely1
- William Emery Nickerson1
- William Ewart Gladstone1
- William Harris Arnold1
- William Harrison Woodward1
- William Herbert1
- William Horatio Crawford1
- William Inglis Morse1
- William Jones1
- William King Richardson1
- William Salloch1
- Wolfgang Täxer1
- Yitzhak Nahum Kuzi1
- Yāsīn ibn ʻAbd al-Wahhāb al-Siṭrābī1
- Yūsuf ibn Shaykh Muḥammad Jamālī1
- Zane, Hieronymus1