| Name | Role | Place | Source | |
|---|---|---|---|---|
| Duconides | Child | 1748 | Amsterdam | Church records baptisms |
| Duconides | Child | 1748 | Amsterdam | Church records baptisms |
| Fredericus Duconides | Lidmaat | 1676 | Sneek | DTB Lidmaten |
| Fredericus Duconides | Lidmaat | 1680 | Sneek | DTB Lidmaten |
| Fridericus Duconides | Lidmaat | 1676 | Franeker | DTB Lidmaten |
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