From Book Owners Online
His (or their) identity has not been established.
Used an armorial bookplate:
Franks 20352: Mendes (anonymous)
Franks 20353: Mendes (anonymous) (A different plate)
- Gambier Howe, E. R. J. Franks bequest: catalogue of British and American book plates bequeathed to the ... British Museum. London, 1903-4.