*Sibyl Fitzsiward
born about 1014 (another source says 1040) Northumberland, England
died 1070 (another source says 1040)

actually her brother?*Siward Biornsson
born Abt 1020 Of Denmark
died 1055 York, Yorkshire, England
buried Galmanho Abbey, York, Yorkshire, England

*Aelfled (Elfleda) of Bernicia
born Abt 1031(?) Of, Bernicia, Northumbria, England
married Abt 1033(?) Of Northumberland, England

*Waltheof Earl of Northumberland born Abt 1046 Of Northumberland, England
died 31 May 1076 buried Jun 1076 Crowland, Lincolnshire, England
Osbeorne of Northumberland born Abt 1050 Of Northumberland, England

*Duncan I King of Scotland
born 1007 Atholl, Perthshire, Scotland
died 14 August 1040 Iona, near Elgin, Scotland
buried Iona, near Elgin, Scotland
married 1030 Scotland

*Malcolm III King of Scotland born about 1033 Atholl, Perthshire, Scotland
died 13 Nov 1093 Alnwick, Northumberland, England
buried Holy Trinity Church, Dumferline, Fifeshire, Scotland
*Melmare (Maelmuire) (Melkofr) Earl of Atholl
born about 1040 Atholl, Perthshire, Scotland
*Donald III "Bane" King of Scotland born about 1033/34 Atholl, Perthshire, Scotland
died after 1097 Rescobie, Angusshire, Scotland buried Iona, Argyllshire, Scotland
Duncan Earl of Moray born about 1038 Morayshire, Scotland

biographical and/or anecdotal:

notes or source:
One source mewntions sybilla as the sister of siward which might render all the dates sensible.