As a result of the Fourth Crusade, the Aleramici founded the Latin Kingdom of Thessalonica, then replaced by the Empire of Thessalonica. During this period, two women of the Monferrato line held the title of "Empress Consort" of the Eastern Roman Empire (Empress Agnes and Empress Irene).
As a consequence of the Fourth Crusade, the Aleramici established the Latin Kingdom of Thessalonica, which was later replaced by the Empire of Thessalonica. During this time, two women from the Monferrato family held the title of "Empress Consort" of the Eastern Roman Empire (Empress Agnes and Empress Irene).