- Henry Pierce Bone (1779 - 1855)
- Robert Walker (c. 1600 - c. 1659)
- William, 1st Marquess of Hertford, after Walker
- Enamel on copper
- Image size: 5.4 x 4.3 cm
Frame size: 6.4 x 5.5 cm
Overall size: 6.8 x 5.5 cm, with hook
- Inscription: 'Marquis of / Hertford. After / Vandyck. Aug. 1849 / Painted by Henry P. Bone / Enamel Painter to Her Ma- / -jesty. P.Albert, & c.col of / E of Clarendon. the / Grove, Herts'
Label: '42. / Mars of / Hertford'
- Reserve Gallery