Nielsen Hayden genealogy
Ancestors of Katharina of Sweden
┌── Ragvald Ulfsson (Abt 990 - ??) =>
┌── Stenkil Ragnvaldsson, King of Sweden (Abt 1020 - 1066)
│ └── Astrid Njalsdotter
│
┌── Inge Stenkilsson, King of Sweden (Abt 1040 - Abt 1100)
│ │
│ │ ┌── Emund, King of Sweden =>
│ └── (Unknown) of Sweden
│
└── Helena (Abt 1050 - ??)