| | Bertha Maria Heickmann 1916–2000 Theodorus Josephus Bernardus "Theo" van Brandenburg 1910–1966 | | |
| | Theodor Wilhelmus Heickmann 1878–1960 Wilhelmine Tenback 1878–1931 | | |
| | Johannes Heickmann 1831–1914 | | |
| | Theodor Johannes "Theo" Heijckmann 1929–2010 Antonia Christina "Tonny" Rijsemus 1930–1998 | | |
| | Theodor Leonard Heijckmann 1900–1978 Theodora Petronella Lamers 1902–1974 | | |
| | Theodor Heickmann 1835–1912 | | |
| | Johannes Heickmann 1800–1875 |