Alberto Azzo II D'+ Este & Kunigunde+ Guelph 
They had a son named Guelph IV+.
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Personal Details
Alberto Azzo II D'+ Este
Alberto Azzo II D'+ was born on July 10th, 1009 in Este, Tuscany, Italy. He died at the age of 88 on August 20th, 1097.
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Children
Guelph IV+ Guelph
Guelph IV+ was born about 1030 in Este, Italy. He died on November 6th, 1101 in Cyprus.