NGV Stambomenverzameling
Gezin: Willem Karssen / Gertruida Alberts Westera (F6266)
Albert Gerrits Westera (1687-1728) 
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Aaltje Willems Westera (1686-1740)
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Willem Alberts Westera (1711-1795)  |
| Gerritje Alberts Westera (1713-1784) |
| Harmpje Alberts Westera (1715- ) |
| Geesje Alberts Westera (1717-1742) |
| Aaltje Alberts Westera (1718- ) |
| Gerrit Alberts Westera (1720-1723) |
| Gerrit Alberts Westera (1724-1739) |
| Gertruida Alberts Westera (1725- )
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| Willem Karssen (1707- ) |