Duncan I of SCOTLAND & Sibyl of Northumbria FITZSIWARD 
They had a son named Malcolm III 'Ceanmor'.
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Personal Details
Duncan I of SCOTLAND
Duncan I of was born about 1003 in Atholl, Perthshire, Scotland. He died on August 14th, 1040 in Iona, near Elgin, Scotland.
Sibyl of Northumbria FITZSIWARD
Sibyl of Northumbria was born about 1014 in Northumberland, England. She died in 1040.
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Children
Malcolm III 'Ceanmor' SCOTLAND
Malcolm III 'Ceanmor' was born in 1031 in Atholl, Perthshire, Scotland. He died at the age of 62 on November 13th, 1093 in Alnwick, Northumberland, England.