Tjerk Jans Hamstra
- Born: 22 Feb 1814, Surhuizum Achtkarspelen Friesland Netherlands
- Marriage: Maaike Jacobs Blom 10 Jun 1843, Achtkarspelen Friesland Netherlands
- Died: 11 Oct 1893, Achtkarspelen Friesland Netherlands at age 79
 Another name for Tjerk was Hemstra.
Tjerk married Maaike Jacobs Blom, daughter of Jacob Hanzes Blom and Janke Wijtzes Postma, on 10 Jun 1843 in Achtkarspelen Friesland Netherlands. (Maaike Jacobs Blom was born on 5 Nov 1819 in Tietjerksteradeel Friesland Netherlands and died on 31 Mar 1884 in Achtkarspelen Friesland Netherlands.)
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