Treaty of Thessaloniki

The Treaty of Thessaloniki was a pact between Conrad III. and Manuel I. Komnenos , which was closed in Thessaloniki in 1145 . He envisaged a pact of aggression against Norman Sicily . Since there is no written form of the contract, the literature generally speaks of the “so-called Treaty of Thessaloniki”. The exact content of the contract is controversial in research.

A joint attack, as foreseen in the agreement, was never carried out: First, Konrad was bound in the empire to fight the Guelphs , then Johannes' successor Manuel I. Komnenus had to defend the borders against the Saracens . Konrad died shortly before a possible implementation. His nephew and successor Friedrich I resumed anti-Sicilian policy in the Treaty of Constance with the Pope in 1153 , but broke off a campaign against the Kingdom of Sicily because of resistance in his army. Through the marriage of his son Heinrich VI. with Konstanze , daughter of Rogers II and heiress of the Norman kingdom, Sicily and southern Italy finally came into Staufer possession. Byzantium , however, was never able to gain a foothold again in this region.

literature

• Jan Paul Niederkorn , Karel Hruza (edit.): The Regests of the Empire under Lothar III. and Konrad III. (Older Staufer 1st department), 2nd part: Konrad III. 1138 (1093/94) -1152 . Böhlau, Vienna / Cologne / Weimar 2008. ISBN 978-3-205-77442-6 . n.580