I actually found the marriage of George Boulard and Marie Jeanne while browsing through the St Landry Parish colonial records on microfilm. They were married in 1779 in St. Landry Parish near Opelousas. The record lists George as a free mulatto from Boston.
I also find this George Boulard involved in land and slave purchases and sails in the St. Landry archives up the the early 1800s. He also appears in the 1792 Opelousas census of free mulattos and negros next to Martin Donato. So George was in the area by 1779 and actually Marie Jeanne Tailleferr was in the St. Landry area properly near Opelousas early. A 1771 Opelousas census shows Donato Bello as a resident there with a 27 year old mulatto female living in the household.This woman is proberly Marie Jeanne. This makes me believe that some of the Donatos might have been born in New Orleans and later St. Landry Parish(Martin, Celeste, and Victoire). As in concerning, George Boulard, I read somewhere that the American Revolution brought many immigrants into French Louisiana from the Atlantic States. It is probable that George Boulard was a part of this stream of Americans. I remember seeing militia lists in Opelousas and the Attakapas with a few free men of color, free blacks, and slaves listed from 1779. Remember the French and Spanish fought with American forces against Great Britian.