I know, I felt the same way when I came across that reference. Here's the origin of the information. Jeanne is said to be Jeanne "Batet" but it's clearly the same family:

Gerard Marc BRAUD, Les Acadiens en France, Nantes et Paimboeuf 1775 -1785, p. 260, Family # 439:

Jean VINCENT, b. abt 1742 Paroisse St-Joseph, Acadie (Acadia). Son of
Antoine VINCENT & Madeleine LANDRY, married 25 Jun 1765 St-Servan, Fra.,
Jeanne BATET, b. abt 1742 St-Sevan, daughter of Jean-Baptiste BATET & Jeanne OFFROY.

Children:
Antoine, bt. 7 Oct 1766 St-Servan, Fra.
Jeanne-Charlotte, bt. 4 Nov 1768, St. Servan,
Alexis-Louis, bt. 9 Sept 1770, St. Servan
Perrine-Jeanne, bt. 2 Apr 1772, St-Servan; married (?) LEFORT
Francoise-Bernadine, b. abt 1774
Jean-Marie, bt. 13 Jan 1776 Chantenay, St-Martin Parish, Godparents: Olivier Theriot & Madeleine GAUTROT, d./bur: 8 Jan 1780 Chantenay
Jean-Pierre, bt. 14 Nov 1778 Chantenay, St-Martin, Godparents: Jean LEFEVRE, Capitaine & Jeanne MIEN; d/bur: 8 April 1780 Chantenay
Jean-Pierre, bt. 3 Sept 1784, Chantenay, St-Martin; Godparents: Antoine Vincent, brother & Jeanne Vincent, sister, d/bur: 7 Oct 1785 Chantenay, St-Martin.


Sadly, this leaves the origin of our Jean Pierre Clement unknown -- and even the question of whether he WAS a Vincent dit Clement, or just a Clement, unsettled. Nothing certain is known of his origins until he shows up in Louisiana.

cheers,

Gordon