Isaac married Cecilia ERLENDSDOTTIR, of Orkney. Cecilia (daughter of Jarl Erlend THORFINNSON, of Orkney and Thora SOMERLEDSDOTTIR) and died. [Group Sheet] [Family Chart]
Erlend married Thora SOMERLEDSDOTTIR. Thora (daughter of Somerled OSPAKSON) and died. [Group Sheet] [Family Chart]
Thorfinn married Countess Ingibjorg FINNSDOTTIR, of Orkney before 1038. Ingibjorg (daughter of Finn ARNISON, of Austratt and Bergliot (Thorborg) HALFDANSDOTTIR) died before 1070. [Group Sheet] [Family Chart]