- Birth: ABT 922, Laugarbrekka, Snaefellsnes, Iceland
- Birth: ABT 922
Descendants of Sigmundur KETILSSON
1 Sigmundur KETILSSON
=Hildiggun BEINIRSDOTTIR Marriage: ABT 937, Laugarbrekka, Snaefellsnes, Iceland
2 Einar SIGMUNDSSON
=Unnur THORISDOTTIR Marriage: ABT 955, Laugarbrekka, Snaefellsnes, Iceland
3 Arnora EINARSDOTTIR
=Thorgeir VIFILSSON
4 Ingveld THORGEIRSDOTTIR
=Thorsteinn (Thorskabitur) SNORRASON
3 Hallveig EINARSDOTTIR
=Thorbjorn VIFILSSON Marriage: ABT 973, Hellisvollum, , , Iceland
4 Gudridur THORBJORNSDOTTIR
=Thorsteinn EIRIKSSON Marriage: 1005
=Thorfinnur THORDARSON Marriage: ABT 1006, Reynistadir, Skagafjardar, Iceland