Isembart II D' ALTDORF & Berthe D' ALEMANIE 
They had a son named Welf I von.
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Personal Details
Isembart II D' ALTDORF
Isembart II was born about 0700 in Altdorf, Uri Canton, Switzerland. He died in 0772.
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Children
Welf I von ALTDORF
Welf I von was born in 0778 in Altdorf, uri Canton, Switzerland. He died in Bavaria, Schwaben, Germany.