John Beaufort, Earl of Somerset,
Ownership Possible (c. 1401-1410) by Inscription.
John Beaufort, Duke of Somerset,
Ownership Possible (c. 1410-1444) by Inscription.
Margaret Beauchamps, duchess of Somerset,
Ownership Confirmed (c. 1443-1456) by Inscription.
Margaret Beaufort, countess of Richmond and Derby,
Ownership Confirmed (1456?-1509) by Inscription.
Anne of York, duchess of Exeter,
Ownership Possible (c. 1461) by Inscription.
Powell, Susan. "Lady Margaret Beaufort and Her Books." The Library 6.3 (1998): 197-240.