Zori Davide Marco, From Viking chiefdoms to medieval state in Iceland: The evolution of social power structures in the Mosfell Valley, Thèse de doctorat soutenue en 2010, (dir. J. Byock, University of California, Los Angeles)
This dissertation presents the results of an interdisciplinary regional study of medieval Icelandic society, beginning with the 9th century settlement of the island and concluding when independent sociopolitical development halted in AD 1262. The nature of the power of medieval Icelandic chieftains has attracted scholarly attention from both historians and anthropologists, who have been drawn to the unusually rich corpus of information in the Icelandic sagas. These chieftains maintained power for several centuries without institutionalized taxation or the development of territorial polities. My research contributes to the understanding of this chiefly power by analyzing separate sources of social power and charting temporal change in the power structures with an interdisciplinary micro-regional study of the Mosfell Valley in southwest Iceland.
Methodologically, I employ multiple lines of evidence, including medieval texts, place names, oral traditions, and archaeological data from regional surveys and excavations. Previous scholarly investigation has relied on textual sources to investigate Icelandic social structure and chiefly power. This is therefore the first regional study of long-term change at the local scale that integrates archaeological and textual sources, providing a detailed and nuanced understanding of the micro-processes in a specific medieval community.
Structured in part by a network of kinship alliances, the settlement of the Mosfell Valley progressed rapidly, with at least three farms established in the first generation. By the early 11th century, the Mosfell chieftains reached their apex of power through the articulation of economic, ideological, military, and political sources of power. The chieftains employed diverse strategies to advance their positions, including mobilization of the subsistence economy for investment in the chiefly political economy, control of a local port and access to prestige goods, and the use of materialized pagan and Christian ideologies to centralize wealth and authority. Although the Mosfell chieftains shifted their strategies with the increasing stratification of Icelandic society, the region became marginalized as neighboring chieftains consolidated territorial power. Nevertheless, and in contrast power interpretations of 13th century conditions, the agency of local leaders caused power in the Mosfell region to remain tired to personal authority and less dominated by territoriality than in neighboring regions.