Hammond 1976, p. 59: "It was in this period that the flow of immigrants from the northwestern area began (see Maps 11-13). It became a flood in the fourteenth century. They went as mercenaries, raiders and migrants. The great majority of them were speakers of Albanian, but others joined the movement. Thus the Vlach-speaking Malakasii, who invaded Thessaly in 1334 were described as 'Albanoi' by Cantacuzenus 1.474 no less than the Albanian-speaking 'Albanensium gens' which raided Thessaly in 1325. (..) In 1358 the Albanians overran Epirus, Acarnania and Aetolia, and established two principalities under their leaders, John Spatas (shpate in Albanian meaning a sword) and Peter Leosas (lios in Albanian meaning a pockmark), Naupactus fell into their control in 1378." Hammond, Nicholas Geoffrey Lemprière (1976). Migrations and invasions in Greece and adjacent areas. Noyes Press. ISBN978-0-8155-5047-1.
Sansaridou-Hendrickx 2017, p. 292: "In 1360, avoiding conflict with the Albanian forces and admitting thus their military superiority, Symeon Uros left in their hands Aetolia, which was divided between two rulers belonging to the Albanian race (genos), namely Gjin Bouas Spatas, who became Despot of Acheloos and Angelokastron, and Peter Liosas who was made Despot of Arta, Rogoi and the region of Amphilochia" Sansaridou-Hendrickx, Thekla (2017). "The Albanians in the Chronicle(s) of Ioannina: An Anthropological Approach". Acta Patristica et Byzantina. 21 (2): 287–306. doi:10.1080/10226486.2010.11879131. S2CID163742869.
Sansaridou-Hendrickx 2017, p. 292: "In 1360, avoiding conflict with the Albanian forces and admitting thus their military superiority, Symeon Uros left in their hands Aetolia, which was divided between two rulers belonging to the Albanian race (genos), namely Gjin Bouas Spatas, who became Despot of Acheloos and Angelokastron, and Peter Liosas who was made Despot of Arta, Rogoi and the region of Amphilochia" Sansaridou-Hendrickx, Thekla (2017). "The Albanians in the Chronicle(s) of Ioannina: An Anthropological Approach". Acta Patristica et Byzantina. 21 (2): 287–306. doi:10.1080/10226486.2010.11879131. S2CID163742869.
Sansaridou-Hendrickx 2017, p. 292: "In 1360, avoiding conflict with the Albanian forces and admitting thus their military superiority, Symeon Uros left in their hands Aetolia, which was divided between two rulers belonging to the Albanian race (genos), namely Gjin Bouas Spatas, who became Despot of Acheloos and Angelokastron, and Peter Liosas who was made Despot of Arta, Rogoi and the region of Amphilochia" Sansaridou-Hendrickx, Thekla (2017). "The Albanians in the Chronicle(s) of Ioannina: An Anthropological Approach". Acta Patristica et Byzantina. 21 (2): 287–306. doi:10.1080/10226486.2010.11879131. S2CID163742869.