Isembart II D'ALTDORF & Hermengarde CAROLINGIAN 
They had a son named Welf I von.
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Personal Details
Isembart II D'ALTDORF
Isembart II was born about 0735 in Altdorf, Uri Canton, Switzerland. He died in 0805.
Hermengarde CAROLINGIAN
Hermengarde was born about 0750 in Aachen,North-Rhine-Wstphalia, Germany. Hermengarde is no longer alive.
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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, Germany.