King of the Isle of Man Godred III Olafsson & Fionguala MacMuirchertach 
They had three sons named King of the Isle of Man Rognvald IV, Ivar and King of Isle of Man Olaf 'The Black'.
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Personal Details
King of the Isle of Man Godred III Olafsson
King of the Isle of Man Godred III was born about 1120 in Balley Chashtal, Castletown, Isle of Man.1 He died on November 10th, 1187 in Balley Chashtal, Castletown, Isle of Man.
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Children
King of the Isle of Man Rognvald IV Godredssonn
King of the Isle of Man Rognvald IV was born about 1150 in Balley Chashtal, Castletown, Isle of Man. He died on February 14th, 1230 in Balley Chashtal, Castletown, Isle of Man.
King of Isle of Man Olaf 'The Black' Godredson
King of Isle of Man Olaf 'The Black' was born about 1167 in Balley Chashtal, Castletown, Isle of Man. He died in 1237 in Balley Chashtal, Castletown, Isle of Man.