Former Owner
- Mark Sittich von Hohenems Altemps1
- Mary Stanley, Countess of Derby1
- Matteo Luigi Canonici1
- Matthew Hale1
- Maḥmūd al-Ustādār, d. 1396 or 71
- Muḥammad Mahdī ibn Murtaḍá ibn Muḥammad Baḥr al-ʻUlūm1
- Muḥammad ibn Muḥammad Zabārah2
- Muṣṭafá Ṣidqī2
- Nicholas N. Martinovitch1
- Pascal Gay1
- Peter Ludwig1
- Philip Kerr, 11th Marquess of Lothian1
- Pietro Giometti1
- Richard Mery of Hatfield1
- Robert Garrett21
- Robert Hoe III2
- Robert Mignan1
- Samuel Addington1
- Saʻd Allāh ibn ʻĪsá Saʻdī Chalabī1
- Sheikh Fazlollah Noori1