Brechtje Klaas Bonsem
- Born: Bef 1721, Hoorn, , Noord-Holland, Netherlands
- Marriage (1): Evert Germentsz de Haan on 14 Jan 1742 in Hoorn, , Noord-Holland, Netherlands
- Died: 25 Mar 1762
 Another name for Brechtje was Brechje Klaasdr.
Brechtje married Evert Germentsz de Haan, son of Germents Evertsz de Haan and Grietje Jacobs Mols, on 14 Jan 1742 in Hoorn, , Noord-Holland, Netherlands. (Evert Germentsz de Haan was christened on 21 Nov 1716 in Hoorn, , Noord-Holland, Netherlands and died on 18 Apr 1797.)
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