| Maaß, Johannes | 4.6.1867 | Aurich | 30.10.1897 | Emden ooAnna Bernadina Swanette Janssen | 14.12.1950 | Emden | | | |
| Maaß, Johannes | 4.6.1867 | Landkreis Aurich | 30.10.1897 | Emden | 14.12.1950 | Kreis Emden | | FamilySearchTree | 190 |
| Maaß, Johannes | 4.6.1867 | Aurich | | | 14.12.1950 | Emden | | GendexList | 180 |
| Maass, Johannes Theodorus | | | 18.2.1908 | Amsterdam (registration) | | | Amsterdam City Archives Militia records | OpenArchNL | 60 |
| Maass, Fredericus Johannes | | | 6.5.1925 | 's-Gravenhage (marriage) | | | Municipal archive The Hague Civil registration marriages | OpenArchNL | 53 |
| Maass, Fredericus Johannes | | | 6.5.1925 | 's-Gravenhage (marriage) | | | Municipal archive The Hague Civil registration marriages | OpenArchNL | 53 |
| Maass, Fredericus Johannes | | | 3.5.1886 | Amsterdam (registration) | | | Amsterdam City Archives Militia records | OpenArchNL | 51 |
| Maass, Fredericus Johannes | | | 3.5.1886 | Amsterdam (registration) | | | Amsterdam City Archives Population register | OpenArchNL | 51 |
| Maass, Fredericus Johannes | | | 3.5.1886 | Amsterdam (registration) | | | Amsterdam City Archives Population register | OpenArchNL | 51 |
| Maass, Johannes Theodorus | | | 23.7.1930 | Amsterdam (marriage) | | | North HollArchives Civil registration marriages | OpenArchNL | 51 |
| Maass, Johannes Theodorus | | | 23.7.1930 | Amsterdam (marriage) | | | North HollArchives Civil registration marriages | OpenArchNL | 51 |
| Maass, Casper Johannes | | | 1880 | Utrecht (registration) | | | The Utrecht Archives Population register | OpenArchNL | 49 |
| Maass, Casper Johannes | | | 20.7.1880 | Amsterdam (registration) | | | Amsterdam City Archives Population register | OpenArchNL | 49 |
| Maass, Emile Johannes Gerardus | | | 1880 | (registration) | | | Rotterdam City Archives Population register | OpenArchNL | 49 |