| IR26 reference | Coverage | Year | Folio or entry numbers |
| IR 26/179 | A - Z | 1796 May-Dec | entries 1 - 153 |
| IR 26/180 | A - Z | 1797 | entries 1 - 387 |
| IR 26/181 | A - Z | 1798 | entries 1 - 373 |
| IR 26/182 | A - Z | 1799 | entries 1 - 350 |
| IR 26/183 | Abstracts of administrations | 1800 | |
| IR 26/184 | A - Z | 1801 | entries 1 - 511 |
| IR 26/185 | A - Z | 1802 | entries 1 - 527 |
| IR 26/186 | A - Z | 1803 | entries 1 - 552 |
| IR 26/187 | A - Z | 1804 | entries 1 - 482 |
| IR 26/188 | A - Z | 1805 | entries 1 - 770 |
| IR 26/189 | A - Z | 1806 | entries 1 - 1415 |
| IR 26/190 | A - Z | 1807 | entries 1 - 1429 |
| IR 26/191 | A - Z | 1808 | entries 1 - 1553 |
| IR 26/192 | A - Z | 1809 | entries 1 - 1713 |
| IR 26/193 | A - Z | 1810 | entries 1 - 1814 |
| IR 26/194 | A - Z | 1811 | entries 1 - 1820 |