| Surname | Leycester |
| First Name(s) | William |
| Date of Rank as Writer Writer | 1790, Aug 1 |
| Execution of Covenant | 1790, Mar 16 |
| Notification of Appointment from the Honourable Court of Directors | 1790, Dec 15 |
| Arrived in India | 1791, Aug 7 |
| Date 5 | 1791, Aug 26: Assistant to the Secretary to Government in the Secret Department. |
| Date 6 | 1791, Dec 1: Commissioner of the Court of Requests. |
| Date 7 | 1792, Jan 20: Second Assistant to the Secretary to the Collector of Dacca. |
| Date 8 | 1793, May 1: Register to the Dewanny Adawlut of Shahabad. |
| Date 9 | 1797, July 21: Register to the Dewanny Adawlut at Nuddea. |
| Date 10 | 1798, Feb 2: Register of the Zillah Court of Tirhoot. |
| Date 11 | 1798, Dec 17: Collector of Behar. |
| Date 12 | 1803, Feb 21: Collector of Moradabad. |
| Date 13 | 1804, Aug 1: Judge and Magistrate of Sheharunpore. |
| Date 14 | 1805, May 9: Judge and Magistrate of Cawnpore. |
| Date 15 | 1807, Mar 11: Judge and Magistrate of Moradabad. |
| Date 16 | 1809, Feb 6: Third Judge of the Provincial Court of Appeal at Benares. |
| Date 17 | 1809, July 14: Officiating Judge and Magistrate of Moorshedabad. |
| Date 18 | 1809, Dec 22: Officiating Judge and Magistrate of Dinagepore. |
| Date 19 | 1810, Jan 26: Judge and Magistrate of Dinagepore. |
| Date 20 | 1812, Feb 1: Judge and Magistrate of Sarun. |
| Date 21 | 1813, Dec 24: Third Judge of the Provincial Court of Moorshedabad. |
| Date 22 | 1814, April 19: Second Judge of the Provincial Court of Bareilly. |
| Date 23 | 1819, Nov 26: Puisne Judge of the Sudder Dewanny and Nizamut Adawlut. |
| Date 24 | 1820, Dec 8: Chief Judge of the Sudder Dewanny and Nizamut Adawlut. |
| Date 25 | 1821, Feb 27: Member of the Sudder Special Commission under Regulation I of 1821. |
| Date 26 | 1821, May 18: In Charge of the Botanical Garden. |
| Date 27 | Died, May 24th, 1831, at Pooree. |