Otto of Swabia II & Matilde Piast 
They had a daughter named Hildegarde.
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Children
Hildegarde of Swabia
Hildegarde was born in 1017 in Swabia, Germany.2 She died at the age of 78 in 1095.2
1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I7183
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I7155&style=TABLE
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I7155&style=TABLE