Jan Sjoerds Haarsma
- Born: 29 Feb 1824, Sumar (Suameer) Tietjerksteradeel Friesland Netherlands
- Marriage: Corneliske Folkerts Fennema 21 May 1853, Bergum (Burgum) Tietjerksteradeel Friesland Netherlands
- Died: 27 May 1896, Nijega Smallingerland Friesland NL
Jan married Corneliske Folkerts Fennema, daughter of Folkert Wolters Fennema and Antje Cornelis IJnia, on 21 May 1853 in Bergum (Burgum) Tietjerksteradeel Friesland Netherlands. (Corneliske Folkerts Fennema was born on 13 Jul 1830 in Garijp (Garyp) Tietjerksteradeel Friesland Netherlands and died on 26 Jan 1912 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands.)
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