+-- Delefluer 
   +--Jacques Seraphine Poirier  (1819-)
+--Seraphine Poirier  (17 Feb 1865-28 Jul 1939)
|  +--Josephine Lefarve  (1821-)
Mary Poirier  (13 Jun 1912-15 Jun 1912)
|        +--Pierre Louis Bergevin-Langevin  (7 Jun 1753-25 Jul 1836)
|     +--Pierre Bergevin-Langevin  (1 Nov 1785-23 Sep 1863)
|     |  |  +--Francois Hebert  (1719-)
|     |  +--Agathe Marie Hebert  (1758-Oct 1835)
|     |     +--Marie Arsenault 
|  +--Sylvain Langevin  (8 Oct 1835-6 Jun 1923)
|  |  |  +--Albert Mercier 
|  |  +--Angelique Mercier  (ABT 1789-AFT 1861)
|  |     +--Madeleine Sauve 
+--Exore Langevin  (1 Nov 1876-26 Aug 1957)
   |  +--Antoine Moineau 
   +--Odille Moineau-Moquin  (1830/1833/1837-1883)
      +--Angelique Legros