Siward Biornsson, b: 1020



		^{Siward Biornsson}^{b.1020 Of, Denmark d.1055 York, England}

	^{Waltheof Earl of Northumberland}^{b.1046 Of, Northumberland, England d.1076 (spm)}

		^{Aelfled (Elfleda) of Bernicia}^{b.1031 Of, England d.}