Alexios I Komnenos, Latinized as Alexius I Comnenus (, 1056 – 15 August 1118 — note that some sources list his date of birth as 1048 ), was Byzantine emperor from 1081 to 1118, and although he was not the founder of the Komnenian dynasty, it was during his reign that the Komnenos family came to full power.

The title ' Nobilissimus ' was given to senior army commanders, the future emperor Alexios I Komnenos being the first to be thus honoured.

Alexios was the son of Ioannis Komnenos and Anna Dalassena, and the nephew of Isaac I Komnenos ( emperor 1057 – 1059 ).

Furthermore, to aid the conspiracy Maria had adopted Alexios as her son, though she was only five years older than he Maria was persuaded to do so on the advice of her own " Alans " and her eunuchs, who had been instigated to do his by Isaac Komnenos.

After bribing the Western troops who had guarded the city, Isaac and Alexios Komnenos entered the capital victoriously on April 1, 1081.

However, this situation changed drastically when Alexios ' first son John II Komnenos was born in 1087: Anna's engagement to Constantine was dissolved, and she was moved to the main Palace to live with her mother and grandmother.

* John Komnenos, Alexios ’ nephew, governor of Dyrrachium, accused of a conspiracy by Theophylact of Bulgaria.

Alexios ' policy of integration of the nobility bore the fruit of continuity: every Byzantine emperor who reigned after Alexios I Komnenos was related to him by either descent or marriage.

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Alexios II Komnenos or Alexius II Comnenus () ( 10 September 1169 – 24 September 1183, Constantinople ), Byzantine emperor ( 1180 – 1183 ), was the son of Emperor Manuel I Komnenos and Maria, daughter of Raymond, prince of Antioch.

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Andronicus was himself a son of Theodora Komnene Angelina, the youngest daughter of Emperor Alexios I Komnenos and Irene Doukaina.

Together with his father and brothers, Alexios had conspired against Emperor Andronikos I Komnenos ( c. 1183 ), and thus he spent several years in exile in Muslim courts, including that of Saladin.

The mother of Alexios, Anna Dalassena, was to play a prominent role in this coup d ' état of 1081, along with the current empress, Maria of Alania.

Alexios V Doukas, surnamed Mourtzouphlos (, d. December 1205, Constantinople ) was Byzantine Emperor ( 5 February – 12 April 1204 ) during the second and final siege of Constantinople by the participants of the Fourth Crusade.

* 1169 – Alexios II Komnenos, Byzantine emperor ( d. 1183 )

* October 5 – Alexios III of Trebizond ( d. 1390 )

* Alexios Komnenos ( d. 1136 ), son of Isaac Komnenos

* Alexios Komnenos ( d. 1187 ), son of John Komnenos, Duke of Cyprus

* Alexios Komnenos ( d. 1188 ), illegitimate son of Manuel I Komnenos

* Alexios V Doukas ( Ἀλέξιος Δούκας Μούρτζουφλος, d. December 1205 ) was Byzantine emperor ( 5 February – 12 April 1204 ) during the second and final siege of Constantinople by the participants of the Fourth Crusade.

* 1203 – Isaac II Angelos, restored Eastern Roman Emperor, declares his son Alexios IV Angelos co-emperor after pressure from the forces of the Fourth Crusade.

Inheriting a collapsing empire and faced with constant warfare during his reign against both the Seljuq Turks in Asia Minor and the Normans in the western Balkans, Alexios was able to halt the Byzantine decline and begin the military, financial, and territorial recovery known as the Komnenian restoration.

Alexios ' father declined the throne on the abdication of Isaac, who was accordingly succeeded by four emperors of other families between 1059 and 1081.

Under one of these emperors, Romanos IV Diogenes ( 1067 – 1071 ), Alexios served with distinction against the Seljuq Turks.

In 1074, the western mercenaries led by Roussel de Bailleul rebelled in Asia Minor, but Alexios successfully subdued them by 1076.

In this capacity, Alexios defeated the rebellions of Nikephoros Bryennios the Elder ( whose son or grandson later married Alexios ' daughter Anna ) and Nikephoros Basilakes, the first at the Battle of Kalavrye and the latter in a surprise night attack on his camp.

Alexios was ordered to march against his brother-in-law Nikephoros Melissenos in Asia Minor but refused to fight his kinsman.

This did not, however, lead to a demotion, as Alexios was needed to counter the expected invasion of the Normans of Southern Italy, led by Robert Guiscard.

While the Byzantine troops were assembling for the expedition, Alexios was approached by the Doukas faction at court, who convinced him to join a conspiracy against Nikephoros III.

As a result, Alexios and Constantine, Maria's son, were now adoptive brothers and both Isaac and Alexios took an oath that they would safeguard his rights as emperor.

As stated in the Alexiad, Isaac and Alexios left Constantinople in mid-February 1081 to raise an army against Botaneiates.

From there she negotiated with the emperor for the safety of family members left in the capital, while protesting her sons ' innocence of hostile actions ; under the falsehood of making a vesperal visit to worship at the church, she deliberately excluded the grandson of Botaneiates and his loyal tutor, met with Alexios and Isaac and fled for the forum of Constantine.

Anna then protested that the family was in fear for their lives, her sons were loyal subjects ( Alexios and Isaac were discovered absent without leave ), and had learned of a plot by enemies of the Komnenoi to have them both blinded and had, therefore, fled the capital so they may continue to be of loyal service to the emperor.

During this time, Alexios was rumored to be the lover of Empress Maria of Alania, the daughter of King Bagrat IV of Georgia, who had been successively married to Michael VII Doukas and his successor Nikephoros III Botaneiates, renowned for her beauty.

Alexios arranged for Maria to stay on the palace grounds, and it was thought that Alexios was considering marrying the erstwhile empress.

However, his mother consolidated the Doukas family connection by arranging the Emperor's marriage to Irene Doukaina, granddaughter of the Caesar John Doukas, the uncle of Michael VII, who would not have supported Alexios otherwise.

As a measure intended to keep the support of the Doukai, Alexios restored Constantine Doukas, the young son of Michael VII and Maria, as co-emperor and a little later betrothed him to his own first-born daughter Anna, who moved into the Mangana Palace with her fiancé and his mother.