Correspondence of Thomas Lewis, esq., MP
- C 1-118.
- Is-is-fonds
- 1709-[1776].
Letters to and from Thomas Lewis, esq., MP.
Rhagolwg argraffu Cau
Dangos 14 canlyniad
Disgrifiad archifol- C 230 etc.
- Is-is-fonds
- 1781-1820.
Mainly family letters.
Sir George Cornewall Lewis papers
- 2922-3142 etc.
- Is-is-fonds
- 1822-1869.
Correspondence of Sir George Cornewall Lewis
- C 783-2336 etc.
- Is-is-fonds
- [1814]-1863.
Letters to and from Sir George Cornewall Lewis.
Deeds and documents mainly re. Radnorshire and Breconshire
- 340-350 etc.
- Is-is-fonds
- 1564-1910.
Letters to Harriet Cornewall (later Mrs Thomas Frankland Lewis)
- C 3041-3067.
- Is-is-fonds
- [1797]-1828.
Letters from family and friends.
Correspondence of the Reverend Sir Gilbert Frankland Lewis,
- C/3208-3355.
- Is-is-fonds
- 1848-1882.
Letters to and from the Reverend Sir Gilbert Frankland Lewis.
- C 351-355.
- Is-is-fonds
- [1782]-[1807].
Mainly family letters.
- C 119-201.
- Is-is-fonds
- 1768-1794.
Letters to and from John Lewis.
Correspondence of Sir Thomas Frankland Lewis
- C 356-642.
- Is-is-fonds
- 1801-1855.
Letters to and from Sir Thomas Frankland Lewis, 1801-1855.
Lewis, T. Frankland (Thomas) Sir, 1780-1855.
Correspondence of Anne Frankland (afterwards Lewis, afterwards Hare)
- C 202-229 etc.
- Is-is-fonds
- 1798-1841.
For content see individual letters.
- C 2956-3023.
- Is-is-fonds
- 1823-1861.
Arranged alphabetically according to recipient. Many of the letters concern the Poor Law Amendment Act and the work of the commissioners.
Letters To Sir Herbert Edmund Frankland Lewis,
- C/3356-3370.
- Is-is-fonds
- 1891-1911.
Letters from miscellaneous correspondents.
- C/3068-3074, C/3371-400, C/3401-3681.
- Is-is-fonds
- 1783-1952.
Letters by fictitious, unknown and named correspondents to members of the Cornewall, Lewis and Duff Gordon families.