The Role of the Byzantine Navy in the Actions of Emperor Louis II of Italy against Bari in 866–871. Louis II’s Letter of 871 to Emperor Basil I (867–886) – as a Source for Marine Military Studies?

Marcin Böhm

doi:10.18778/2084-140X.13.23

Authors

Marcin Böhm University of Opole, Faculty of Social Studies, Institute of History

DOI:

https://doi.org/10.18778/2084-140X.13.23

Keywords:

Basil I, Louis II of Italy, the Emirate of Bari, Sicily, Southern Italy, Adriatic Sea

Abstract

The rivalry between the Carolingians and the Byzantines in Italy during the second half of the 9th century faced a new threat – the rise of Islam. Despite the need to unite against the common enemy, mutual suspicion between these two centres of imperial power persisted. This is evident in their joint efforts to confront the Muslim outpost in Apulia, the Emirate of Bari. This article aims to examine the role of the Byzantine fleet in the actions of Emperor Louis II (825–875) during the campaign to eliminate the Emirate of Bari – a task in which the Carolingian ruler was successful. The primary source for this investigation is Louis II’s letter of 871 to Emperor Basil I (867–886). In the letter, the author identifies the links between the activities of Muslims in the Adriatic and Tyrrhenian Seas and their strongholds in Sicily and Africa. Consequently, the author outlines a logical plan to expel the Saracens from Italy, particularly from Campania (Naples) and Calabria, with a crucial role assigned to the Byzantine fleet. The Franks intended to coordinate land operations with the Byzantines in Sicily, aiming to reclaim Palermo – a city, according to the letter, closely linked to the Muslim piracy. However, this plan was based on wishful thinking, as it failed to consider the dispersion of the Byzantine navy, which was simultaneously engaged in conflicts against the forces of the Abbasids, the emirate of Crete, and the Slavic pirates in the Adriatic Sea. These factors, coupled with a growing aversion between the Franks and the Byzantines, ultimately led to the collapse of the alliance and their plans. Despite later successes, the Byzantine fleet was unable to provide timely aid to Sicily and actively counter the advance of Islam on the island.

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References

Chronicon Salernitanum, ed. U. Westerbergh, Stockholm 1956.
Google Scholar

Chronographiae Quae Theophanis Continuati Nomine Fertur Liber Quo Vita Basilii Imperatoris Amplectitur, ed. I. Ševčenko, Berlin 2011 [= Corpus fontium historiae byzantinae, 42].
Google Scholar

Constantine Porphyrogenitus, De Administrando Imperio, ed. G. Moravcsik, trans. R. J.H. Jenkins, 3Washington 1993 [= Corpus fontium historiae byzantinae, 1].
Google Scholar

Ioannnes Zonaras, Epitome historiarum libri XIII–XVIII, ed. T. Buttner-Wobst, Leipzig 1897 [= Corpus scriptorum historiae byzantinae, 49].
Google Scholar

Ioannnis Skylitzae Synopsis Historiarum, ed. I. Thurn, Berlin–New York 1973 [= Corpus fontium historiae byzantinae, 5].
Google Scholar

Iohannes Diaconus, Chronicon Venetum et Gradense usque ad a. 1008, ed. G. H. Pertz, Stuttgart 1846 [= Monumenta Germaniae historica, Scriptores, 7].
Google Scholar

The Little History of the Lombards of Benevento by Erchempert. A Critical Edition and Translation of ‘Ystoriola Longobardorum Beneventum degentium, ed. L. A. Berto, Routledge 2021.
Google Scholar

Ludovici II. imperatoris epistola, ed. W. Henze, Berolini 1928 [= Monumenta Germaniae historica, Epistolae Karolini aevi V, 7.2], p. 385–394.
Google Scholar

Regesten der Kaiserurkunden des oströmischen Reiches. Von 565–1453, vol. I.2, Regesten von 867–1025, ed. F. Dölger, A. E. Müller, München 2003.
Google Scholar

Vita Athanasii episcopi Neapolitani, ed. G. Waitz, Hannoverae 1878 [= Monumenta Germaniae historica, Scriptores rerum Langobardicarum et Italicarum saec. VI–IX].
Google Scholar

Arnaldi G., Impero d’occidente e impero d’oriente nella lettera di Ludovico II a Basilio I, “La Cultura. Rivista di Filosofia, Letteratura e Storia” 1, 1963, p. 404–424.
Google Scholar

Bondioli L. M., Islamic Bari between the Aghlabids and the Two Empires, [in:] The Aghlabids and their Neighbors. Art and Material Culture in Ninth-Century North Africa, ed. G. D. Anderson, C. Fenwick, M. Rosser-Owen, S. Lamine, Leiden–Boston 2018 [= Handbook of Oriental Studies. Section 1, The Near and Middle East, 122], p. 470–490, https://doi.org/10.1163/9789004356047_024
Google Scholar DOI: https://doi.org/10.1163/9789004356047_024

Brković M., Diplomatička analiza papinskih pisama druge polovice IX. stoljeća destinatarima u Hrvatskoj, “Radovi Zavoda za povijesne znanosti HAZU u Zadru” 43, 2001, p. 29–44.
Google Scholar

Christides V., Military Intelligence in Arabo-Byzantine Naval Warfare, [in:] Byzantium at War (9th–12th), ed. K. Tsiknakis, Athens 1997, p. 269–281.
Google Scholar

Curta F., A Note on Trade and Trade Centers in the Eastern and Northern Adriatic Region Between the Eighth and the Ninth Century, “Hortus artium medievalium” 16, 2010, p. 267–276, https://doi.org/10.1484/J.HAM.3.22
Google Scholar DOI: https://doi.org/10.1484/J.HAM.3.22

Džino D., From Justinian to Branimir. The Making of the Middle Ages in Dalmatia, London–New York 2021 [= Studies in Medieval History and Culture], https://doi.org/10.4324/9780429299162
Google Scholar DOI: https://doi.org/10.4324/9780429299162

Eickhoff E., Seekrieg und Seepolitik zwischen Islam und Abendland. Das Mittelmeer unter byzantinischer und arabischer Hegemonie (650–1040), Berlin 1966, https://doi.org/10.1515/9783110818635
Google Scholar DOI: https://doi.org/10.1515/9783110818635

Fanning S., Imperial Diplomacy between Francia and Byzantium: The Letter of Louis II to Basil I in 871, “Cithara” 34, 1994, p. 3–17.
Google Scholar

Fine J., The Early Medieval Balkans. A Critical Survey from Sixth to the Late Twelfth Century, Michigan 2000.
Google Scholar

Gantner C., Ad utriusque imperii unitatem? Anastasius Bibliothecarius as a Broker between Two Cultures and Three Courts in the Ninth Century, “Medieval Worlds” 13, 2021, p. 36–53, https://doi.org/10.1553/medievalworlds_no13_2021s36
Google Scholar DOI: https://doi.org/10.1553/medievalworlds_no13_2021s36

Gantner C., Kaiser Ludwig II. von Italien und Byzanz, [in:] Menschen, Bilder, Sprache, Dinge, Wege der Kommunikation zwischen Byzanz und dem Westen, vol. II, Menschen und Worte, ed. F. Daim, C. Gastgeber, D. Herher, C. Rapp, Mainz 2018 [= Byzanz zwischen Orient und Okzident, 9.2], p. 103–112.
Google Scholar

Gay J., L’Italie méridionale et l’empire Byzantin depuis l’avènement de Basile Ier jusqu’à la prise de Bari par les Normands (867–1071), Paris 1904.
Google Scholar

Georgios: Georgius. Prosopographie der mittelbyzantinischen Zeit Online [online], ed. R. J. Lilie, C. Ludwig, B. Zielke, T. Pratsch, Berlin–Boston 2013, https://www.degruyter.com/database/PMBZ/entry/PMBZ24246/html [31 VII 2023].
Google Scholar

Granier T., La captivité de l’empereur Louis II à Bénévent (13 août – 17 septembre 871) dans les sources des IXe–Xe siècles: l’écriture de l’histoire, de la fausse nouvelle au récit exemplaire, [in:] Faire l’événement au Moyen Âge, [s.l.] 2007, p. 13–39, https://doi.org/10.4000/books.pup.5703
Google Scholar DOI: https://doi.org/10.4000/books.pup.5703

Harris R., Dubrovnik. A History, London 2006.
Google Scholar

Heath C., Third/Ninth-Century Violence: ‘Saracens’ and Sawdān in Erchempert’s Historia, “Al Masaq” 27.1, 2015, p. 24–40, https://doi.org/10.1080/09503110.2015.1002231
Google Scholar DOI: https://doi.org/10.1080/09503110.2015.1002231

Henze W., Über den Brief Kaiser Ludwigs II. an den Kaiser Basilius I., “Neues Archiv der Gesellschaft für ältere deutsche Geschichtskunde” 35, 1910, p. 663–676.
Google Scholar

Jankovič Đ., Srpsko pomorje od 7. do 10. stoleća, Beograd 2007.
Google Scholar

Jurić R., Ranohrvatski brodovi iz Nina, “Radovi Zavoda za povijesne znanosti Hazu u Zadru” 37, 1995, p. 77–91.
Google Scholar

Jurić R., Sutlović S., Vilhar B., The Early Croatian Boats from Nin, “Diadora” 18–19, 1997, p. 379–386.
Google Scholar DOI: https://doi.org/10.1016/S0167-5699(97)01101-8

Kislinger E., Erster und zweiter Sieger. Zum Byzantinisch-Karolingischen bündnis bezüglich Bari 870–871, “Зборник радова Византолошког института” / “Zbornik radova Vizantološkog instituta” 50, 2013, p. 245–258, https://doi.org/10.2298/ZRVI1350245K
Google Scholar DOI: https://doi.org/10.2298/ZRVI1350245K

Kleinclausz A., La lettre de Louis II à Basile le Macédonien, “Le Moyen Âge. Revue trimestrelle d’histoire et de philologie” 17, 1904, p. 45–53.
Google Scholar

Kolditz S., Gesandtschafen, Briefe und Konzilien in den Beziehungen Ludwigs II. von Italien zu Byzanz, [in:] Von der Ostsee zum Mittelmeer. Forschungen zur mittelalterlichen Geschichte für Wolfgang Huschner, ed. S. Roebert, Leipzig 2019, p. 289–310.
Google Scholar

Kreutz B., Before the Normans. Southern Italy in the Ninth and Tenth Centuries, [s.l.] 1996.
Google Scholar

Kreutz B., Ships, Shipping, and the Implications of Change in the Early Medieval Mediterranean, “Viator” 7, 1976, p. 79–100, https://doi.org/10.1484/J.VIATOR.2.301585
Google Scholar DOI: https://doi.org/10.1484/J.VIATOR.2.301585

Lavermicocca N., Bari bizantina Origine, declino, eredità di una capitale mediterranea, Bari 2017.
Google Scholar

Lounghis T. C., The Byzantine War Navy and the West, Fifth to Twelfth Centuries, [in:] A Military History of the Mediterranean Sea. Aspects of War, Diplomacy, and Military Elites, ed. G. Theotokis, A. Yildiz, Leiden–Boston 2018, p. 21–43, https://doi.org/10.1163/9789004362048_003
Google Scholar DOI: https://doi.org/10.1163/9789004362048_003

Makrypoulias Ch., The Navy in the Works of Constantine Porphyrogenitus, “Graeco-Arabica” 6, 1995, p. 152–171.
Google Scholar

Metcalfe A., The Muslims of Medieval Italy, Edinburgh 2009 [= The New Edinburgh Islamic Surveys], https://doi.org/10.1515/9780748629114
Google Scholar DOI: https://doi.org/10.1515/9780748629114

Moutsos D., Greek Χελανδιον and Latin Celundria, “Byzantion” 62, 1992, p. 402–413.
Google Scholar

Musca G., L’emirato di Bari, 847–871, Bari 1964.
Google Scholar

Poupardin R., La lettre de Louis II à Basile le Macédonien. À propos d’un livre récent, “Le Moyen Âge. Revue trimestrelle d’histoire et de philologie” 16, 1903, p. 185–202.
Google Scholar

Prosopographie der mittelbyzantinischen Zeit. Erste Abteilung (867–1025), vol. III, Leon (#4271) – Placentius (#6265), ed. R.-J. Lilie, C. Ludwig, T. Pratsch, Berlin–New York 2000.
Google Scholar

Pryor J., Types of Ships and their Performance Capabilities, [in:] Travel in Byzantine World, ed. R. Macrides, Birmingham 2000, p. 39–41.
Google Scholar

Pryor J., Jeffreys E., The Age of the Δρομων. The Byzantine Navy, ca 500–1204, Brill 2006 [= The Medieval Mediterranean, 62], https://doi.org/10.1163/9789047409939
Google Scholar DOI: https://doi.org/10.1163/9789047409939

Setton K. M., On the Raids of the Moslems in the Aegean in the Ninth and Tenth Centuries and their Alleged Occupation of Athens, “American Journal of Archaeology” 58.4, 1954, p. 311–319, https://doi.org/10.2307/500384
Google Scholar DOI: https://doi.org/10.2307/500384

Sophocles E. A., Greek Lexicon of the Roman and Byzantine Periods, Hildesheim–New York 1975.
Google Scholar

Soranzo G., La concezione dell’autorità imperiale nella lettera di Lodovico II a Basilio I (a. 871), [in:] Atti del II Congresso Nazionale di Studi Romani, vol. II, Roma 1931, p. 115–124.
Google Scholar

Stevovič I. D., Byzantium, Byzantine Italy and Cities on the Eastern Coast of the Adriatic: The Case of Kotor and Dubrovnik, “Зборник радова Византолошког института” / “Zbornik radova Vizantološkog instituta” 39, 2001, p. 165–182, https://doi.org/10.2298/ZRVI0239165S
Google Scholar DOI: https://doi.org/10.2298/ZRVI0239165S

Tobias N., Basil I (867–886), the Founder of the Macedonian Dynasty: a Study of the Political and Military History of the Byzantine Empire in the Ninth Century (Ph.D. Thesis, Rutgers. The State University of New Jersey–New Brunswick 1969).
Google Scholar

Vasiliev A. A., Byzance et les Arabes, vol. I, La dynastie d’Amorium (820–867), ed. H. Grégoire, M. Canard, Brussels 1935 [= Corpus bruxellense historiae byzantinae].
Google Scholar

Vasiliev A. A., Byzance et les Arabes, vol. II, Les relations politiques de Byzance et des Arabes à l’époque de la dynastie macédonienne (les empereurs Basile I, Léon le Sage et Constantin VII Porphyrogénète) 867–959 (253–348). Première partie: Les relations politiques de Byzance et des Arabes à l’époque de la dynastie macédonienne. Première période, de 867 à 959, ed. H. Grégoire, M. Canard, Brussels 1968 [= Corpus bruxellense historiae byzantinae].
Google Scholar

Vlyssidou V. N., Contribution à l’étude de la politique étrangère de Basile Ier au cours de la décennie 867–877, “Βυζαντινά Σύμμεικτα / Byzantina Symmeikta” 4, 1981, p. 301–315.
Google Scholar

Vlyssidou V. N., Réactions à la politique occidentale de Basile Ier et formation d’un nouveau haut commadement de l’armée, “Βυζαντινά Σύμμεικτα / Byzantina Symmeikta” 5, 1983, p. 127–141.
Google Scholar

Wolińska T., Próby stworzenia sojuszu antysaraceńskiego na południu Italii (IX – początek X wieku), “Przegląd Historyczny” 97.2, 2006, p. 145–164.
Google Scholar

Živković T., On the Baptism of the Serbs and Croats in the Time of Basil I (867–886), “Studia Slavica et Balcanica Petropolitana” 1, 2013, p. 33–53.
Google Scholar