| Name | Role | Place | Source | |
|---|---|---|---|---|
| Bertha De Keyzer | Child | 1909 | Brussel | Civil registration births |
| Bertha De Keyzer | Child | 1904 | Leefdaal | Civil registration births |
| Bertha De Keyzer | Bride | 1920 | Gent | Civil registration marriages |
| Bertha Keyzer de | Deceased | 2009 | Best, Leerdam | Prayer card collection |
| Bertha Marie Thérèse De Keyzer | Child | 1883 | Brugge | Civil registration births |
| Bertha de Keyzer | Deceased | 2010 | Sint-Lievens-Houtem, Bavegem | Prayer card collection |
| Maria Bertha De Keyzer | Child | 1885 | Kessel-Lo | Civil registration births |
| Maria Ludovica Bertha De Keyzer | Child | 1890 | Petegem-aan-de-Schelde | Civil registration births |
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