King of Scotland Duncan (The Gracious) Alpin of Scots I & Sybil Biornsson 
The Gracious and Sybil were married. They had three sons and a daughter, named Longneck, Donald, Melmare and Margaret.
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Personal Details
Birth Notes
B: Abt. 1009Death Notes
D: Abt. 1040
King of Scotland Duncan (The Gracious) Alpin of Scots I
Duncan, known as The Gracious, was born in 1013 in Atholl, Perthshire, Scotland.1 He died due to killed by Macbeth at Elgin at the age of 27 on August 14th, 1040 in Iona, Elgin, Scotland. He was buried in Icolmkill.2 1
Sybil Biornsson
Sybil was born in 1009.3
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Children
Birth Notes
B: Abt. 1031
Malcolm (Longneck) Caenmoe Dunkeld of Scotland III
Malcolm, known as Longneck, was born in 1031 in Atholl, Perthshire, Scotland.3
King Donald Bane of Scots III
Donald was born in 1033 in Scotland.2 He died at the age of 66 in 1099. He was buried in Iona.4 5
Earl of Atholl, Prince of Scotland Melmare of Scots
Melmare was born in 1045 in Atholl, Perthshire, Scotland.1
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I41721&style=TABLE
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I6046
3 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I25244&style=TABLE
4 http://www.englishmonarchs.co.uk/dunkeld_3.htm
5 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I6059
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I6046
3 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I25244&style=TABLE
4 http://www.englishmonarchs.co.uk/dunkeld_3.htm
5 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I6059