Bontje Jacobs Kooistra
- Born: 1801, Oudega (Aldegea) Smallingerland Friesland Netherlands
- Christened: 12 Sep 1801, Oudega (Aldegea) Smallingerland Friesland Netherlands
- Marriage: Hendrik Jans Mulder on 5 Nov 1823 in Smallingerland Friesland Netherlands
- Died: 16 Aug 1842, Oudega (Aldegea) Smallingerland Friesland Netherlands at age 41
 Another name for Bontje was Bintje.
Bontje married Hendrik Jans Mulder, son of Jan Hendriks Mulder and Wietske Hendriks van der Scheer, on 5 Nov 1823 in Smallingerland Friesland Netherlands. (Hendrik Jans Mulder was born on 26 Nov 1797 in Midwolde Leek Groningen Netherlands and died on 23 Nov 1853 in Smallingerland Friesland Netherlands.)
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