| Surname | Mackenzie |
| First Name(s) | Colin |
| Date of Rank as Writer Writer | 1827, Apr 30 |
| Execution of Covenant | 1827, Feb 9 |
| Notification of Appointment from the Honourable Court of Directors | 1827, Feb 6 |
| Arrived in India | 1827, Jun 11 |
| Date 5 | 1828, Jan 31: Assistant to the Magistrate and Collector of Ghazeepore. |
| Date 6 | 1828, Mar 27: Assistant to the Magistrate and Collector of Shahabad. |
| Date 7 | 1829, Nov 10: Acting Collector of Shahabad. |
| Date 8 | 1831, Jan 18: Officiating Collector of Customs and Land Revenue at Mirzapore. |
| Date 9 | 1831, Nov 22: Assistant to the Commissioner of Revenue and Circuit, Benares Division. |
| Date 10 | 1831, Dec 21: Assistant to the Collector and Magistrate of Juanpore. |
| Date 11 | 1832, Jan 10: Head Assistant to the Magistrate and Collector of Shahabad. |
| Date 12 | 1833, Oct 7: Joint-Magistrate and Deputy Collector of Cawnpore. |
| Date 13 | 1836, Oct 24: Officiating Joint-Magistrate and Deputy Collector of Agra. |
| Date 14 | 1837, Feb 13: Joint-Magistrate and Deputy Collector of Agra. |
| Date 15 | 1837, Feb 21: Officiating Magistrate and Collector of Agra. |
| Date 16 | 1837, Aug 29: Exercising the Powers of Joint-Magistrate and Deputy Collector in the District of Meerut. |
| Date 17 | 1837, Nov 1: In Charge of the Office of the Judge of Meerut. |
| Date 18 | 1840, Mar 7: Officiating Joint-Magistrate and Deputy Collector of Allyghur. |
| Date 19 | 1840, Dec 1: Joint-Magistrate and Deputy Collector of Mynporee, and continuing as Officiating Joint-Magistrate and Deputy Collector of Allyghur. |
| Date 20 | 1840, Dec 7: Officiating Additional Sessions Judge of Bundlecund. |
| Date 21 | 1840, Dec 9: Joint-Magistrate and Deputy Collector of Delhi, but continuing to Officiate as Additional Sessions Judge of Bundlecund. |
| Date 22 | 1840, Dec 18: Joint-Magistrate and Deputy Collector of Juanpore, and continuing to Officiate as Additional Sessions Judge of Bundlecund. |
| Date 23 | 1841, Apr 15: Joint-Magistrate and Deputy Collector of Mirzapore, but continuing to Officiate as Joint-Magistrate and Deputy Collector of Juanpore. |
| Date 24 | 1841, Jun 26: Joint-Magistrate and Deputy Collector of Humeerpore. |