Jacob Frederik Steffaan 1879–1936 Carolina Alberdina Thoomes 1880–1948 | | |
| | Christoffelina Steffaan 1876–1939 Cornelis Luxzenburg 1878–1943 | | |
Jannetje Jacoba Wijk van 1885–1956 | | |
Jacob Frederik Steffaan 1878–1879 | | |
Evert Lambertus Steffaan 1889–… | | |
Elisabeth Steffaan 1892–… | | |
| | Helena Landzaat 1851–1926 Jacob Frederik Steffaan 1850–1914 Jacob Frederik Steffaan …–… | | |