| Croon, Ernst Johannes | 30.1.1897 | | | | | | | | |
| Croon, Hendericus Johannes | 1.8.1897 | Groningen | | | | | AlleGroningers Civil registration births | OpenArchNL | 89 |
| Croon, Franciscus Johannes Augustinus | 28.8.1897 | Nijmegen | | | | | Gelders Archive Civil registration births | OpenArchNL | 89 |
| Croon, | 24.5.1897 | Perk | | | | | State Archives of Belgium (Leuven) Civil registration births | OpenArchNL | 69 |
| Croon, Willem Pieter Johannes | 6.3.1896 | Delft | | | | | Archive Delft Civil registration births | OpenArchNL | 59 |
| Croon, Johannes Adrianus | | | 24.10.1945 | Rotterdam (marriage) | | | Rotterdam City Archives Civil registration marriages | OpenArchNL | 58 |
| Croon, Johannes Adrianus | | | 24.10.1945 | Rotterdam (marriage) | | | Rotterdam City Archives Civil registration marriages | OpenArchNL | 58 |
| Croon, Gerardus Johannes | | | 13.1.1945 | Ede (marriage) | | | Gelders Archive Civil registration marriages | OpenArchNL | 58 |
| Croon, Gerardus Johannes | | | 13.1.1945 | Ede (marriage) | | | Gelders Archive Civil registration marriages | OpenArchNL | 58 |
| Croon, Johannes Arnoldus | | | 4.9.1942 | Helmond (marriage) | | | Brabant Historical Information Centre Civil registration marria | OpenArchNL | 57 |
| Croon, Johannes Arnoldus | | | 4.9.1942 | Helmond (marriage) | | | Brabant Historical Information Centre Civil registration marria | OpenArchNL | 57 |
| Croon, Johannes Arnoldus | | | 4.9.1942 | Helmond (marriage) | | | Regional Historic Centre Eindhoven Civil registration marriages | OpenArchNL | 57 |
| Croon, Johannes Arnoldus | | | 4.9.1942 | Helmond (marriage) | | | Regional Historic Centre Eindhoven Civil registration marriages | OpenArchNL | 57 |
| Croon, Johannes Henricus | | | 8.11.1939 | Apeldoorn (marriage) | | | Gelders Archive Civil registration marriages | OpenArchNL | 56 |
| Croon, Johannes Henricus | | | 8.11.1939 | Apeldoorn (marriage) | | | Gelders Archive Civil registration marriages | OpenArchNL | 56 |
| Croon, Arnoldus Johannes | | | 27.5.1936 | Voorst (marriage) | | | Gelders Archive Civil registration marriages | OpenArchNL | 55 |
| Croon, Arnoldus Johannes | | | 27.5.1936 | Voorst (marriage) | | | Gelders Archive Civil registration marriages | OpenArchNL | 55 |
| Croon, Arnoldus Johannes | | | | | 10.8.1988 | Voorst | Rijckheyt center for regional history Prayer card collection | OpenArchNL | 55 |
| Croon, Johannes Theodorus | | | 14.6.1934 | Voorburg (notariële inschrijving) | | | Municipal archive The Hague Notarial records | OpenArchNL | 54 |
| Croon, Albertus Arnoldus Johannes | | | 24.1.1935 | Amsterdam (marriage) | | | North HollArchives Civil registration marriages | OpenArchNL | 54 |
| Croon, Albertus Arnoldus Johannes | | | 24.1.1935 | Amsterdam (marriage) | | | North HollArchives Civil registration marriages | OpenArchNL | 54 |