+---- Ole Gundersen Undal 1651-1737
+---- Gunder Olsen Undal 1675-1741
| +---- x x
+---- Fredrik Gundersen Undal 1700-1782
| +---- x x
+---- Ole Fredriksen Undal 1720-1804
| | +---- x x
| | +---- Tomas Olsen Brinsdal ca 1660-ca 1709
| | | +---- x x †
| +---- Åse Tomasdtr. Kjerr 1699-1760
| | +---- Knud Tomassen Fuskeland ca 1632-ca 1693
| +---- Siri Knudsdtr. Fuskeland †ca 1726
| +---- x x
==== Berte Olsdtr. Laustø 1754-
| +---- Omund x †ca 1646
| +---- Peder Omundsen Grøsbrokk †1706
| | +---- x x
| +---- x x
| | | +---- x x
| | +---- x x
| | +---- x x
+---- Kirsten Olsdtr. Laustø 1725-1762
+---- x x
|