The Devantier Family Tree
Family: Søren Anton Langkjær / Marie Christina Dupont (F2523)
 | Frands Frederik Ferdinand Dupont (1830-1890) 
|
 | Bertheline Christine Andersen (1839- ) |
| Alfred Dupont (1862- )  |
| Ferdinand Bartholin Dupont (1864-1865) |
| Agnes Elisabeth Dupont (1866- ) |
| Ferdinand Batholin Dupont (1869- ) |
| Jean Corneille Dupont (1872- ) |
| Berthel Dupont (1876- ) |
| Axel Thorvald Dupont (1879- ) |
| Søren Anton Langkjær (1856- ) |
| Marie Christina Dupont (1860- )
|
| Axel Frederik Ferdinand Langkjær (1888- ) |
| Anna Carla Bartoline Langkjær (1889- ) |
| Carl Ejnar Langkjær (1892- ) |
| Dagny Agnes Elisabeth Langkjær (1896- ) |
| Poul Viggo Langkjær (1899- ) |