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Male Welf Isanbart von ALTDORF, Count in THURGAU Click to view Welf Isanbart von ALTDORF, Count in THURGAU in the family tree

Welf Isanbart von was born about 0755 in Altdorf, Uri Canton, Switzerland.  Welf Isanbart von is no longer alive.

Welf Isanbart von's family with Irmentrude Thiedrada von Nagolzau de ALEMANNI

They had a son named Guelph I (Welf) Duke of.