| Jonkheer Eric Otto Holmberg de Beckfelt |
| Jonkheer Eric Otto Holmberg de Beckfelt | |
| B: | 24 Jun 1903 |
| Amsterdam | |
| D: | 9 Aug 1969 |
| Leiden | |
| Bertha Geertruida Roetman |
| Bertha Geertruida Roetman | |
| B: | 28 Jan 1897 |
| Amsterdam | |
| M: | 8 Oct 1925 |
| Calcutta, West-Bengalen, India | |
| D: | 31 May 1980 |
| Amsterdam | |
| Mae Ailshare Ebby |
| Mae Ailshare Ebby | |
| B: | Abt 1901 |
| Buckeye Lake, Ohio, United States of America | |
| M: | 23 Jan 1932 |
| Nuevo Laredo, Tamaulipas, Mexico | |
| Jonkheer Otto Theodoor Ludolph Holmberg de Beckfelt | |
| B: | 21 Oct 1869 |
| Den Haag | |
| D: | 30 Apr 1919 |
| Amsterdam | |
| Abramine Julienne van Oosterzee |
| Abramine Julienne van Oosterzee | |
| B: | 30 Nov 1878 |
| Jakarta, West-Java, Indonesië | |
| M: | 18 Jun 1902 |
| Jakarta, West-Java, Indonesië | |
| D: | 21 Aug 1949 |
| Den Haag | |
| Jonkheer ir Nicolaas Anthony (Anton) Holmberg de Beckfelt | |
| B: | 4 Jul 1871 |
| Den Haag | |
| D: | 20 Sep 1934 |
| Den Haag | |
| Barones Anna Clara van Heemstra |
| Barones Anna Clara van Heemstra | |
| B: | 24 Apr 1909 |
| Ede | |
| D: | 4 Oct 1992 |
| Gerard Regnier Gerlacius van Swinderen | |
| B: | 2 Aug 1906 |
| Jonkvrouw Louise Elisabeth Hermine Holmberg de Beckfelt | |
| B: | 1 Apr 1880 |
| London, England | |
| D: | 16 May 1952 |
| Cape Town, South Africa | |
| Baron Schelto van Heemstra |
| Baron Schelto van Heemstra | |
| B: | 30 Dec 1875 |
| Arnhem | |
| M: | 16 Jan 1908 |
| Apeldoorn | |
| D: | 12 May 1935 |
| Den Haag | |
|
| Jonkheer Nicolaas Anthony Holmberg de Beckfelt | |
| B: | 3 Jul 1828 |
| Pakalongan, West-Java, Indonesië | |
| D: | 16 Feb 1886 |
| Apeldoorn | |
| Adriana Jacoba Helena Prins |
| Adriana Jacoba Helena Prins | |
| B: | 21 Jun 1843 |
| Soerabaja Oost-Java, Indonesië | |
| M: | 18 Jun 1864 |
| Jakarta, West-Java, Indonesië | |
| D: | 13 Jul 1923 |
| Leiden | |