Hedwiga (also known as Hathui; c. 850/55 – 24 December 903), was Duchess of Saxony from about 880 until her death, by her marriage with the Liudolfing duke Otto the Illustrious. She is the mother of King Henry the Fowler. Her parentage is not clearly stated in any contemporary source. One probable conjecture is that she was the daughter of Henry of Franconia (d. 886), documented as a princeps militiae of the East Frankish king Louis the Younger and dux of Austrasia under emperor Charles the Fat. Dux Henry died fighting against the Vikings during the Siege of Paris in West Francia.