| Author | Popularity |
| Ash Routen |
3 |
| Carolyn D. Summerbell |
3 |
| Cath Jackson |
3 |
| Catherine Hewitt |
3 |
| Claire O'Malley |
3 |
| Daniel D. Bingham |
3 |
| Gerry Richardson |
3 |
| Hannah R. Ainsworth |
3 |
| Helen J. Moore |
3 |
| John Wright |
3 |
| Kate E. Pickett |
3 |
| Sally E. Barber |
3 |
| Shaheen Akhtar |
3 |
| Shirley Brierley |
3 |
| Hannah Buckley |
1 |
| Hewitt, Esther |
1 |
| National Library of Ireland |
1 |
| Public Record Office of Northern Ireland |
1 |
| Shannon, Henry Boyle, (Earl of) |
1 |
| Shannon, Richard Boyle, (Earl of) |
1 |