| Surname | Mangles |
| First Name(s) | Ross Donnelly |
| Date of Rank as Writer Writer | 1819, Apr 30 |
| Execution of Covenant | 1820, Apr 20 |
| Notification of Appointment from the Honourable Court of Directors | 1820, Jan 26 |
| Arrived in India | 1820, Sep 16 |
| Date 5 | 1821, Sep 28: Assistant to the Secretary to the Board of Commissioners in the Ceded and Conquered Provinces. |
| Date 6 | 1822, Oct 3: Acting Collector of Government Customs and Town Duties at Furruckabad. |
| Date 7 | 1823, Jan 25: In charge of Pergunnah Salamipore in Bareilly |
| Date 8 | 1823, Jun 12: Assistant to the Secretary to the Board of Revenue, Lower Provinces. |
| Date 9 | 1823, Oct 8: Acting Commissioner of Soonderbunds. |
| Date 10 | 1824, Oct 23: Officiating Collector of Revenue and Customs at Chittagong. |
| Date 11 | 1825, Jul 8: Officiating Secretary to the Board of Revenue, Lower Provinces. |
| Date 12 | 1825, Aug 26: Secretary to the Commissioner of Pegue and Ava. |
| Date 13 | 1826, Apr 21: Deputy Secretary to Government in the Judicial and Territorial Departments. |
| Date 14 | 1828, Jan 15: Proceeded to Europe on Furlough. |
| Date 15 | 1831, Nov 28: Returned to India. |
| Date 16 | 1831, Dec 6: Officiating Junior Secretary to the Sudder Board of Revenue at the Presidency. |
| Date 17 | 1832, April 3: Deputy Secretary to Government in the General Department. |
| Date 18 | 1832, April 30: Officiating Junior Secretary to the Sudder Board of Revenue. |
| Date 19 | 1833, Feb 22: Magistrate and Collector of Tipperah. |
| Date 20 | 1833, Jul 1: Magistrate and Collector of Customs and Land Revenue at Chittagong, and Officiating Secretary to the Sudder Board of Revenue at Calcutta. |
| Date 21 | 1833, Nov 14: Magistrate and Collector of Agra. |
| Date 22 | 1834, Dec 3: Secretary to the Board of Revenue, Lower Provinces. |
| Date 23 | 1835, Mar 9: Member of the General Committee of Public Instruction. |
| Date 24 | 1835, Mar 13: Secretary to the Government of Bengal in the Judicial and Revenue Departments. |
| Date 25 | 1837, Oct 9: Officiating Secretary to Government of India in the Revenue, Judicial and Legislative Departments. |
| Date 26 | 1837, Oct 20: Officiating Private Secretary to the Deputy Governor of Bengal, and in charge of Revenue, Judicial and Legislative Departments. |
| Date 27 | 1838, May 28: Temporary Member of the Sudder Board of Revenue at the Presidency. |
| Date 28 | 1839, Mar 14: Proceeded to Europe on Private Affairs. |