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Male Guelph IV Duke of Bavaria Click to view Guelph IV Duke of Bavaria in the family tree

Guelph IV Duke of was born about 1040 in Este, Italy.  Guelph IV Duke of's father was Alberto Azzo II Marquis d' Este and his mother was Cunigunde of Altdorf.  His paternal grandparents were Azo I Marquis d' Este and Valdrada of Venice; his maternal grandmother was Irmtrud Judith Countess of Luxembourg. He had a half-brother named Hugo III du.  He died on November 6th, 1101.  He was buried in Crusader.


Guelph IV Duke of's family with Judith of Flanders

‌Guelph IV Duke of and Judith of were married in a religious ceremony in 1071 in 2nd husband 2nd wife.

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