| Name | Role | Place | Source | |
|---|---|---|---|---|
| Sibble Binnerts Douma | Creditor | 1914 | Tietjerksteradeel | Notarial records |
| Sibble Binnerts Douma | Registered | 1865 | Bergum | Population register |
| Sibble Douma | Debtor | 1833 | Leeuwarden | Notarial records |
| Sibble Douma | Requirant | 1896 | Smallingerland | Notarial records |
| Sibble Douma | Buyer | 1842 | Leeuwarden | Notarial records |
| Sibble Douma | Divident | 1897 | Smallingerland | Notarial records |
| Sibble Douma | Gelastigde | 1841 | Smallingerland | Notarial records |
| Sibble Douma | Buyer | 1844 | Leeuwarden | Notarial records |
| Sibble Sieberen Douma | Owner | 1832 | Drogeham | Cadastre |
| Sibble Sieberens Douma | Owner | 1832 | Drogeham | Cadastre |
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