According to the medieval chronicler Berthold of Reichenau, Burkhard I, Count of Zollern (de Zolorin) was born before 1025 and died in 1061.
Prema srednjevjekonom kroničaru Bertholdu od Reichenaua, plemić Burkhard , grof od Zollerna (de Zolorin) je rođen prije 1025., a umro je 1061.