1. | Pieter Klazes van der Werf was born about 1764; died on 09 Apr 1820 in Opsterland, FR, NLD. Family/Spouse: Elizabeth Aizes Leffering. Elizabeth (daughter of Aize Hendriks Leffering and Grietje Poppes) was born about 1765; died on 17 Oct 1843 in huis 43, Kortezwaag, Opsterland, FR, NLD. [Group Sheet] [Family Chart] Children:
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