According to tradition, the French commander Captain Jean Baptiste Louis DeCourtel Marchand married the high-status Creek woman Sehoy in about 1720.
It is known that Jean was the French military commanding officer of the French colonial trading Fort Toulouse, near present day Wetumpka, Alabama.
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Alexander's mother, Sehoy Marchand, was the daughter of Sehoy, a mixed-race Creek woman of the prestigious Wind Clan ("Hutalgalgi"), and of Jean Baptiste Louis DeCourtel Marchand, a French officer at Fort Toulouse.
Early biographers claimed Sehoy Marchand was the daughter of a French officer at Fort Toulouse named Jean-Baptiste Marchand.