Jan Freercks Postma
- Born: 26 Apr 1684, Buitenpost Achtkarspelen Friesland Netherlands
- Marriage: Sjoukje Wytses Cloppenburg 5 Nov 1699, Veenwouden (Feanwâlden) Dantumadeel (Dantumadiel) Friesland Netherlands
- Died: 27 Feb 1731, Buitenpost Achtkarspelen Friesland Netherlands at age 46
 Another name for Jan was Jantjen Freerks.
Jan married Sjoukje Wytses Cloppenburg on 5 Nov 1699 in Veenwouden (Feanwâlden) Dantumadeel (Dantumadiel) Friesland Netherlands. (Sjoukje Wytses Cloppenburg was born in 1680 and died on 2 Mar 1728 in Buitenpost Achtkarspelen Friesland Netherlands.)
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