+--Jean-Marc Bessieres  (Private-)
Romain Bessieres  (Private-)
|                             +--Jean Lacassagne  (BEF 1659-UNKNOWN)
|                          +--Antoine Lacassagne  (-UNKNOWN)
|                          |  +--Jeanne Lagarrigue  (-UNKNOWN)
|                       +--Jean Lacassagne  (-UNKNOWN)
|                       |  +--Marie Pouget  (-UNKNOWN)
|                    +--Jean Lacassagne  (-UNKNOWN)
|                    |  +--Marie Lagarrigue  (-UNKNOWN)
|                 +--François Lacassagne  (15 APR 1775-28 APR 1836)
|                 |  +--Marie Laumon  (-UNKNOWN)
|              +--Jean-Antoine Lacassagne  (31 MAR 1807-1886)
|              |  +--Marie-Rose Bourel  (4 AUG 1787-UNKNOWN)
|           +--Jean-François Lacassagne  (12 MAR 1840-ABT 1916)
|           |  +--Marie Lacombe  (24 SEP 1799-6 MAY 1866)
|        +--Jean-Antoine Émile Lacassagne  (2 JUL 1876-ABT 1943)
|        |  |  +--Jean Falipou  (14 NOV 1811-UNKNOWN)
|        |  +--Marie-Rose Falipou  (8 JUN 1844-2 JUL 1906)
|        |     |     +--Antoine Debals  (10 NOV 1731-22 MAR 1789)
|        |     |  +--Jean Antoine Debals  (25 OCT 1772-27 JUN 1838)
|        |     |  |  |     +--Antoine Lasserre  (27 JUN 1680-UNKNOWN)
|        |     |  |  |  +--Jean Lasserre  (ABT 1713-23 NOV 1795)
|        |     |  |  |  |  |     +--Jean Brenguier Mayran  (-UNKNOWN)
|        |     |  |  |  |  |  +--Jean Phalip Mayran  (BEF 1675-31 DEC 1707)
|        |     |  |  |  |  |  |  +--Anne Thoery  (-UNKNOWN)
|        |     |  |  |  |  +--Anne Mayran  (5 JAN 1692/93-UNKNOWN)
|        |     |  |  |  |     +--Marguerite Falipou  (31 JAN 1673/74-UNKNOWN)
|        |     |  |  +--Anne Lasserre  (-17 NOV 1777)
|        |     |  |     +--Jeanne Dintilhac  (-UNKNOWN)
|        |     +--Catherine Debals  (17 JUN 1806-9 SEP 1885)
|        |        +--Catherine Cantaloube  (16 OCT 1775-15 JUL 1817)
|     +--René Lacassagne  (Private-)
|     |  +--Marie Octavie Fraysse  (-UNKNOWN)
|  +--Bernard Lacassagne  (Private-)
|  |  |  +--Germain DANIE  (-UNKNOWN)
|  |  +--Berthe Danie  (Private-)
|  |     +--Honorine CUEYE  (-UNKNOWN)
+--Béatrice Lacassagne  (Private-)
   +--Ginette Mayrand  (Private-)