+--Jacob Treur  (7 Mar 1815-30 May 1902)
+--Jan Treur  (25 Mar 1842-13 Aug 1926)
|  |  +--Abraham Jacobsz Oppelaar  (15 Aug 1778-25 Aug 1818)
|  +--Cornelia Oppelaar  (1817-3 Aug 1876)
Cornelia Evertje Treur  (1 Apr 1876-9 Mar 1947)