Dietpirch is named as wife of Hupald in the Vita S. Oudalrici. Herimannus names "Dietpirch" as daughter of "Burchardus dux" and wife of "Hartmannus comes". The Vita b. Hucbaldi names "Theobergam, filiam Burcardi ducis Sueviæ de genere Veringarum" as wife of "Hucbaldus", specifying that she brought Dillingen to her husband.
The necrology of Neresheim records the death "XVI Kal Apr" of "Dietpirga com mater s Udalrici". The necrology of Ottenburen records the death "XI Kal Apr" of "Dietpirc mater s Uodalrici ep". 1
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