| 1791 |
Born in Louisiana |
| 1828 |
Elected to Mayor of New Orleans as a Jacksonian Democrat against A. Peuchaud, the (John Quincy) Adams faction candidate. Prieur is re-elected to four more terms and during much of his administration squabbles with William Harper a Federalist councilman. |
| 1828 |
The state legislature prohibits exhibition of blacks for sale in prominent parts of the city. John Holland is sheriff. Adventures of Bras Coupe - fugitive slave. |
| 1830-1831 |
The state government is removed to Donaldsonville for a year. Charity Hospital for a time is located at Common and Baronne Streets is moved to Tulane Avenue. The building vacated by the hospital houses the state government for the next 16 years. |
| 1842 |
Re-elected to mayor as a Democrat. During this short term plundering and robbery is prevalent in the city, he organizes the "Square Watch." |
| 1843 |
Resigns as mayor to take an appointment from the governor as Registrar of Mortgages. |
| 1800 |
Denis Prier is a Democratic candidate for governor but loses. He takes an appointment as the Collector of Customs. |
| 1857 November 9 |
Dies at age 66. |