King of Norway Sigurd (Jorsalfar) Magnusson I & Muirchertach Ua Briain 
They had a son named King of Norway Magnus IV.
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Personal Details
King of Norway Sigurd (Jorsalfar) Magnusson I
Sigurd, known as Jorsalfar, was born about 1094 in Bergen, Norway.1 He died in 1130 in Bergen, Norway.2
Muirchertach Ua Briain
Muirchertach Ua was born about 1100 in Munster, Éireann, Ireland. Muirchertach Ua is no longer alive.
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Children
King of Norway Magnus IV Sigurdsson
King of Norway Magnus IV was born about 1116 in Bergen, Norway. He died on November 12th, 1139 in Battle at Hvaler, Østfold, Norway..
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=clcaldwell&id=I26362&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=clcaldwell&id=I26366
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=clcaldwell&id=I26366