| 1786 July |
Born on St. Ann Street in old New Orleans to Peter Walker and Constantia Revoli. |
| 1807 |
Joined the Spanish military in Mexico and is commissioned a lieutenant of dragoons and later becomes a master at the military school at Chihuahua. He later becomes a horse trader and cattle dealer driving stock from the interior of Mexico to Natchez for a considerable profit. |
| 1812 | Enlists in the Louisiana State Militia. |
| 1815 | Serves at Chalmette in the Battle of New Orleans. |
| 1820 | Elected to the State House of Representatives. |
| 1822 | Promoted to Brigadier General, First Brigade of the State Militia. He inherits from his English grandmother and purchases a plantation in Rapides Parish, becoming a cotton planter. Marries Catherine Carter of Adams County, Mississippi. The marriage produces three daughters and seven sons. Re-elected to the State House where he is the Chairman of the Committee on State Militia. |
| 1824 | Elected to State Senate. |
| 1832 | Re-elected to the State Senate. |
| 1834 | Loses a race against Whig Alexander Porter for the U. S. Senate. |
| 1836 | Returns to his plantation in Rapides Parish. |
| 1845 | Delegate to constitutional convention and is elected as President of the Convention. |
| 1845 |
Commercial interests found this constitution too restrictive. It limited the right of the legislature to borrow money, placed a prohibition against public funds for internal improvements, forbid the legislature to charter banks and limited corporations to 25 years. Democrats supported these restrictions. The voters sought a constitutional change to extend reforms begun in 1845, while Walker and Democrats wanted to use slower process of constitutional amendments. |
| 1846 | Elected State Treasurer. |
| 1849 | Nominated as a Democrat for governor, but was not a unanimous choice. |
| 1849 November 5 |
Defeats Whig Alexander De Clouet despite heavy mud slinging. Won by more than 1,000 votes our of 34,000 cast. During this administration an expedition to free Cuba ends in failure under leader General Narcisco Lopez is executed causing riots in New Orleans against Spanish Flag for which the federal government is obliged to give redress to Spain. |
| 1850-1853 January 28 |
First governor inaugurated in the new state house. During this administration there were very few internal improvements. Schools continue to improve. |
| 1852 January |
Tells General Assembly that he opposes the plan, but it is adopted by a sizable majority of the voters. The revised constitution requires lower house to be apportioned by total population (already applies to Senate). A possibility of succession is mentioned in 1849. |
| 1853 January 17 |
Leaves the office a year early and retires to his Rapides plantation. He refuses to consider any more offices even, the U. S. Senate. |
| 1856 | Dies January 26. |