One marked grave of an early Alabama pioneer and a cenotaph to an earlier French Colonial marine, the grave having been listed in "Cemeteries of Elmore County", Volume II, c. 1989 by Linda and Tracey Blankenship, Wetumpka, Alabama. The Mississippian (1100-1400 AD) Mound town site due west of the fort was excavated primarily during 1920-1950 for the large clay pot burials of Native Americans. Some of these burial finds are on display at the Alabama Department of Archives and History Museum in Montgomery, Alabama.

The French established the fort in 1717 and garrisoned it with 30 to 50 men until it was ceded to the British in 1763. The park brochure relates farmsteads were established around the fort by French soldiers. One of them, Sergeant Jean-Louis Fontenot, raised 12 children here during the period 1730-1755. A group of his descendents erected a memorial to him at this location in 1998. "Revoluntionary War Soldiers in Alabama", by Thomas M. Owen, in its paragraph on the early pioneer interred here, Issac Ross, reflects a report of sixty-six French and American soldiers having been buried here as well. They were said to have been exhumed in 1897 by order of the War Department for reburial in the National Cemetery in Mobile, Alabama.

During the Creek Indian War of 1813-1814, General Andrew Jackson had a fort built upon the French site. It was garrisoned by soldiers of regular army regiments. A town arose near the fort and was established as the seat of Montgomery County, Alabama, in 1815. The fort was abandoned in 1818 and the county seat moved downriver to Montgomery. The Alabama Department of Archives and History purchased five acres of land at Fort Jackson in 1911 at a cost of $265 from Hardy Simmons, a former slave. The Society of Colonial Dames erected a granite obelisk in the center of the tract in 1912. This was followed by the placement of a marble stone honoring General Andrew Jackson, 300 yards south of the obelisk, by the Peter Fourney Chapter of the Daughters of the American Revolution in 1915. A bronze plaque was placed at the site in 1961 noting its designation as a Registered National Historic Landmark by the National Park Service. The Alabama Historical Commission conducted archaeological and reconstruction work at the site during 1972-1980, with additional work from 1984-1986.

A large area of the Fort Toulouse-Fort Jackson State Historic Site was put through the condemnation process in the 1970's, when the government deemed it in the public's best interest to acquire the land and the owner was given a fair appraisal value. Isaac Ross was an ancestor of the previous land owner and is buried in what is now the Bartram Arboretum. After a period of court action the state conceded the allowance of an acre size family burial plot to remain in the landowners possession, surrounded by the 180 acre park system.