Template:Wp-Angelos

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The House of Angelos, feminine form Angelina, plural Angeloi, was a Byzantine Greek noble lineage which rose to prominence through the marriage of its founder, Constantine Angelos, with Theodora Komnene, the youngest daughter of Emperor Alexios I Komnenos. As imperial relatives, the Angeloi held various high titles and military commands under Emperor Manuel I Komnenos. In 1185, following a revolt against Andronikos I Komnenos, Isaac II Angelos rose to the throne, the first of three Angeloi emperors who ruled until 1204. The period was marked by the decline and fragmentation of the Byzantine Empire, culminating in its dissolution by the Fourth Crusade in 1204.

After the Fourth Crusade, another branch of the family managed to establish an independent state in Epirus. The members of this branch largely eschewed the use of the 'Angelos' surname in favour of the more prestigious 'Doukas' and 'Komnenos', and are collectively known as the Komnenodoukai. From Epirus, they quickly expanded to rule Thessaly and Macedonia. In , Theodore Komnenos Doukas conquered Thessalonica, and founded the Empire of Thessalonica, claiming the Byzantine imperial title in rivalry to the Empire of Nicaea. His empire quickly collapsed after the Battle of Klokotnitsa in 1230. Thessalonica was lost to Nicaea in 1246, and the prospects of recovering Constantinople were dashed at the Battle of Pelagonia in 1259, followed by the re-establishment of the Byzantine Empire under the Palaiologos dynasty in 1261. Often in rivalry to the new Byzantine regime, the Komnenodoukai nevertheless secured recognition and titles from Constantinople, and retained their control over Thessaly (ruled by a cadet line) and Epirus until 1318.