Alexios was the son of John Komnenos and Anna Dalassene, and the nephew of Isaac I Komnenos (emperor 1057–1059). Alexios' father declined the throne on the abdication of Isaac, who was thus succeeded by

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Apart from all of his external enemies, a host of rebels also sought to overthrow Alexios from the imperial throne, thereby posing another major threat to his reign. Due to the troubled times

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Under Alexios the debased solidus (tetarteron and histamenon) was discontinued and a gold coinage of higher fineness (generally .900–.950) was established in 1092,

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Alexios I had overcome a dangerous crisis and stabilized the Byzantine Empire, inaugurating a century of imperial prosperity and success. He had also profoundly altered the

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• Byzantine army (Komnenian era)
• List of Byzantine emperors

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1. ^ "Alexiad", 2.10. "It was Holy Thursday [...] in the fourth indiction in the month of April 6589. [He] poured into the city through the Charisian Gate".
2. ^ Romuald Guarna(c.

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By his marriage with Irene Doukaina, Alexios I had the following children:
1. Anna Komnene (1 December 1083 – 1148/55), in her infancy she was betrothed to Constantine Doukas, and with him treated as co-ruler by her father until after the birth of John II. In

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