Hattusili I
The existence of Labarna I is questioned by some modern scholars. "Labarna" was also a title of early Hittite rulers, such as Hattusili I. Given the relatively few contemporaneous references to Labarna I personally, some scholars have suggested that pioneering Hittitologists may have erred in assuming that Labarna was the personal name of a king. According to this theory, the first "Labarna" (in the sense of a title) was Hattusili I, who is normally regarded as the second "Labarna".