| Name | Role | Place | Source | |
|---|---|---|---|---|
| Isaac Fellinger | Person in notarial deed | 1746 | Eersel | Notarial records |
| Isaac Fellinger | Witness | 1749 | Amsterdam | Church records baptisms |
| Isaac Fellinger | Witness | 1658 | Leiden | |
| Isaac Gerlach Fellinger | Lidmaat of gevormde | 1762 | Harderwijk | Member register |
| Isaac Gerlach Fellinger | Lidmaat of gevormde | 1759 | Harderwijk | Member register |
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