Attaleiates (1022-1080) mentions the term Albanoi twice and the term Arbanitai once. The term Albanoi is used first to describe the groups which rebelled in southern Italy and Sicily against the Byzantines in 1038–40. The second use of the term Albanoi is related to groups which supported the revolt of George Maniakes in 1042 and marched with him throughout the Balkans against the Byzantine capital, Constantinople. The term Arvanitai is used to describe a revolt of Bulgarians (Boulgaroi) and Arbanitai in the theme of Dyrrhachium in 1078–79. It is generally accepted that Arbanitai refers to the ethnonym of medieval Albanians. As such, it is considered to be the first attestation of Albanian as an ethnic group in Byzantine historiography. The use of the term Albanoi in 1038-49 and 1042 as an ethnonym related to Albanians have been a subject of debate. In what has been termed the "Ducellier-Vrannousi" debate, Alain Ducellier proposed that both uses of the term referred to medieval Albanians. Era Vrannousi counter-suggested that the first use referred to Normans, while the second did not have an ethnic connotation necessarily and could be a reference to the Normans as "foreigners" (aubain) in Epirus which Maniakes and his army traversed. The debate has never been resolved. A newer synthesis about the second use of the term Albanoi by Pëllumb Xhufi suggests that the term Albanoi may have referred to Albanians of the specific district of Arbanon, while Arbanitai to Albanians in general regardless of the specific region they inhabited. The Arbanasi people are recorded as being 'half-believers' and speaking their own language in a Bulgarian text found in a Serbian manuscript dating to 1628; the text was written by an anonymous author that according to Radoslav Grujić (1934) dated to the reign of Samuel of Bulgaria (997–1014), or possibly, according to R. Elsie, 1000–1018. In History written in 1079–1080, Byzantine historian Michael Attaliates referred to the Albanoi as having taken part in a revolt against Constantinople in 1043 and to the Arbanitai as subjects of the duke of Dyrrhachium. It is disputed, however, whether the "Albanoi" of the events of 1043 refers to Albanians in an ethnic sense or whether "Albanoi" is a reference to folks from southern Italy under an archaic name (there was also a tribe of Italy by the name of Albani). However a later reference to Albanians from the same Attaliates, regarding the participation of