The generally accepted identification of Old English Gēatas as the same ethnonym as Swedish götar and Old Norse gautar is based on the observation that the ö monophthong of modern Swedish and the au diphthong of Old Norse correspond to the ēa diphthong of Old English.
Fahlbeck's theory was refuted by Schück who in 1907 noted that another Old English source, the Anglo-Saxon Chronicle, called the Jutes īutna, īotum or īutum [REF].