John Komnenos () was a Byzantine aristocrat, the nephew of Emperor Alexios I Komnenos () and governor (doux) of the strategically important city and theme of Dyrrhachium from 1091 to . Biography Early life John was born in late 1073, the eldest son of the sebastokrator Isaac Komnenos, older brother of Emperor Alexios I Komnenos (), and his Georgian wife, Irene "of Alania". In 1081, his uncle, Emperor Alexios, proposed to the German emperor Henry IV (), a marriage match between John and a German princess. Alexios recommended his nephew as both handsome and of prudent character, but nothing came of this proposal. Career In early 1091, John was chosen by Alexios to replace John Doukas as the governor (doux) of Dyrrhachium, in modern-day Albania. The city was of great importance to the Byzantine Empire, as the "key of Albania" and the main point of entry from Italy into the Balkans, a fact illustrated by the role it played in the Norman invasion under Robert Guiscard, in the early years of Alexios's reign. Soon after the assumption of his duties, however, he was accused by Archbishop Theophylact of Bulgaria of plotting against the Emperor. To defend himself against the accusation, John travelled to Philippopolis, where Alexios resided. It is not clear whether the allegations had any substance; nevertheless, the affair evolved into a family quarrel between Alexios and his brother Isaac, who was also present. Eventually, Alexios dismissed the allegations and reconfirmed John in his post. Later, in 1094, despite his military inexperience, John was charged with confronting raids by the Serbs under Vukan of Rascia into the Byzantine province. John allowed himself to become involved in prolonged negotiations with the Serbian ruler, giving the latter valuable time to prepare his forces. When he was ready, Vukan attacked the Byzantines near Lipenion and inflicted a heavy defeat upon them. John travelled to Constantinople to explain his defeat to Alexios, but was not relieved of his post. In 1096, he received and hosted Count Hugh I of Vermandois, whose fleet had been shipwrecked off the coast of Dyrrhachium. John was probably still doux of Dyrrhachium in 1105/06, when he is recorded in the Alexiad, Anna Komnene's history of her father Alexios I's reign, to have been defeated in a campaign against the Dalmatians. As the threat of a renewed Norman invasion by Guiscard's son, Bohemond, loomed, the emperor replaced John with