| Name | Role | Place | Source | |
|---|---|---|---|---|
| Alexander Frederik Willem Lefeber | Child | 1823 | Maastricht | Civil registration births |
| Alexander Lefeber | Witness | 1701 | Leiden | |
| Alexander Lefeber | Witness | 1688 | Leiden | |
| Alexander Lefeber | Registered | 1717 | Amsterdam | Church records burials |
| Alexander Lefeber | Witness | 1699 | Leiden | |
| Alexander Lefeber | Witness | 1701 | Leiden | |
| Alexander Ludovicus Lefeber | Deceased | 1878 | Antwerpen | Civil registration deaths |
| George Alexander Lefeber | Registered | 's-Gravenhage | Studbooks |
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