┌── Jan Andries Oort(About 1738 Giethoorn, Overijssel, Nederland - 1795 Rotsterhaule, Schoterland, Friesland,
                     │   Nederland) =>

               ┌── Andries Jans Oort (Wednesday 10 May 1769 Giethoorn, Overijssel, Nederland - Date unknown)

               │     └── Annigjen Gerrits Plat (1738 Giethoorn, Overijssel, Nederland - Date unknown) =>

         ┌── Jan Andries Oord(Wednesday 18 December 1811 Follega, Lemsterland, Friesland, Nederland - Thursday 19 March 1863 Oudega,
         │   Smallingerland, Friesland, Nederland)

         │     │     ┌── Gerrit Jans Smit (Date unknown - Date unknown)

         │     └── Willemtje Gerrits Smit(Thursday 05 November 1772 Rotsterhaule, Schoterland, Friesland, Nederland - Thursday 16
         │         November 1826 Langezwaag, Opsterland, Friesland, Nederland)

         │           └── Willempje Andries Driesen (About 1743 Barsbeek, Ambt Vollenhove, Overijssel, Nederland - Date unknown) =>

   ┌── Andries Oord(Tuesday 04 May 1858 Oudega, Smallingerland, Friesland, Nederland - Wednesday 18 March 1931 Franeker, Friesland,
   │   Nederland)

   │     │     ┌── Douwe Joltjes Hoekstra (Date unknown - Date unknown)

   │     └── Taetske Douwes Hoekstra (Thursday 06 February 1823 Workum, Friesland, Nederland - Date unknown)

   │           └── Bauke Hiddes (Date unknown - Date unknown)

Wiebrigje Oord (Friday 13 June 1890 Franeker, Friesland, Nederland - Date unknown)

   └── Eeke Staalstra (Thursday 21 March 1861 Franeker, Friesland, Nederland - Date unknown)