| Title | Photographic reproduction of Letters Patent under the Great Seal of King Charles I, dated at Oxford 1643, creating Sir William Widdrington, Bart., Baron of Widdrington of Blankney, County Lincoln, as a reward for his services to the royalist cause at Sheffield and elsewhere |
| Administrative History | Sir William's great grandson (the then holder of this peerage) was attainted for high treason in the Jaobite rebellion of 1715, and the title was forfeited. |
| Custodial History | The original patent was previously at Hassop Hall and was given to the Bodleian Library by Mr Bagshawe and Mr Bradbury in 1931. |