| Auth name | Display name | Birth year | Death year | Gender | Contribution Count |
|---|---|---|---|---|---|
| Christina Georgina Rossetti | Christina Rossetti | 1830 | 1894 | Female | 4 |
| — | Ch. Fraisse | — | — | Unknown | 1 |
| Catherine M. Webber | Catherine M. Webber | — | — | Unknown | 1 |
| — | Caroline H. Dall | — | — | Unknown | 2 |
| — | Caroline Bray | — | — | Unknown | 1 |
| Carlo Lorenzini | Carlo Lorenzini | — | — | Unknown | 1 |
| — | C. W. | — | — | Unknown | 1 |
| — | C. S. T. | — | — | Unknown | 1 |
| C. S. Coker | C. S. Coker | — | — | Unknown | 1 |
| — | C. S. | — | — | Unknown | 1 |
| — | C. S. | — | — | Unknown | 1 |
| — | C. O. | — | — | Unknown | 3 |
| — | C. M. W. | — | — | Unknown | 3 |
| — | C. M. A. C. | — | — | Unknown | 1 |
| — | C. M. | — | — | Unknown | 1 |
| — | C. H. M. | — | — | Unknown | 1 |
| — | C. D. | — | — | Unknown | 1 |
| Charles Bagot Cayley | C. B. Cayley | 1823 | 1883 | Male | 2 |
| — | C. | — | — | Unknown | 1 |
| — | C. | — | — | Unknown | 1 |
| — | By S. H. | — | — | Unknown | 1 |
| — | Bubo | — | — | Unknown | 2 |
| — | Bessie Rayner Parkes | — | — | Unknown | 1 |
| Elizabeth Rayner Parkes | Bessie R. Parkes | 1829 | 1925 | Female | 47 |
| — | Bessie Inglis | — | — | Unknown | 1 |