I have built a circumstantial case for a line and was hoping for some documentation. Here is the circumstantial case:
There are some notes on William's service in the War of 1812: SOURCE: HISTORY OF ANGELINA COUNTY, 1992, Article by Mrs. Leland T. Jordan
[ The possible parents Elias Jourdan, b. 1768 in Warren Co NC and Rachel Cass b. c 1770 SC M. 1789 in SC, moved from SC to Clarksville TN ]----- "went to Tennessee, according to his ...military records, he enlisted as a volunteer private at Clarksville, Montgomery County Tennessee in the Tennessee Militia, commanded by Captain Abraham Allen in the Regt of Col. Richard Napier, 1st Rgt West Tn Militia, in the war against the Creek Indians under Gen. Jackson from January 28, to 10 May, 1814. He was in the Battle of the Horse Shoe [ Battle of Horseshoe Bend, March 27, 1814 Location near Dadeville, Alabama ] as will appear in the muster roll of said Company. He was honorably discharged, after four months service, at Huntsville in Mississippi Territory.
He was mustered in as a volunteer at Nashville, in the fall, 13 November, 1814, as a private in the Company commanded by Captain John Weakly in the Regt commanded by Col. John Cocke, 2nd Rgt West Tn Militia for the term of six months in the war of 1812, having been engaged in the Battle of New Orleans [ January 8, 1815 ] and was honorably discharged on May 13, 1815. According to the enlistment record, William Jordan was 6 feet tall, light hair, blue eyes, fair complexion and 19 years of age
-referrence to the muster roll of said company, in all he served the U.S. ten months and made this declaration to obtain Bounty Land to Officers and Soldiers who have been engaged in the Millitary Service of the US
passed Sep 28th A.D. 1850. Signed William Jordan. --------
In a conversation with Thomas Sumrall, a grandson of William Jordan, Sumrall stated that his grandmother Jordan told him about the adventures of his grandfather in the service during the war of 1812.
After he returned home [ to Tennessee ], having been discharged, he became restless and decided to go to Texas; his parents objected, but with Morgan, a Negro slave, they ran away and hiked to Texas, arriving on 10 January 1821 at Old Sabine Town.
It was the same month and year that his grandmother's [Gramdmother Jordan's] father Elijah Isaacks and family arrived from Pike County, Mississippi.
In Clarksville TN, there is the family of Elias Jourdan m. Rachel Cass of SC. They had an oldest son William who would have been the right age. William did not move to IL with Elias and the rest of the family.
This gives a connection to SC, a connection in TN at the right time, and a reason to be in MS at the right time, and a reason for family disowning - skipping out with Morgan, the slave...
Circumstantial, but interesting. If there were to be a dna match from both the IL and TX families, it might be considered firm.
By the way, you probably already have this about AC Jourdan: Co C 13 Tx Cav. In the same unit, Co C 13 Tx Cav is a Thomas A Jordan. Is this not his brother?