Ortlieb's Chronicon of Zwiefalten records that Rudolf married "filiam comitis Liuthoni ac Willibirgæ de Mumpilgart seu de Wulvelingin Adelheidam...sororem Hunfridi Ravennantiam archiepiscopi", adding that the couple had seven sons and three daughters. A charter dated to [1053] records that "sue sororis Adelheide, eiusque filiorum" confirmed the donations to Strasbourg by "Hunfrit Argentinensis ecclesie…canonicus, postea…Ravennas archiepiscopi" after first challenging them. 1