Family
 Frederick of Büren, Count in RiesgauSon of Frederick of Swabia and N.N.. Born ± 1020 Died ± 1053, approximately 33 years Married/ Related to:  Hildegard of EgisheimBorn ± 1025 Died ± 1094, approximately 69 years Notes: Hildegard's ancestry is uncertain, with recent sources identifying her father as Count Gerhard I of Egisheim-Dagsburg, whereas older sources assign her to either Schlettstadt, Bar, Mousson (or even other) comital families. Child: | |||