John was probably still doux of Dyrrhachium in 1105/1106, when he is recorded by Anna Komnene to have been defeated in a campaign against the Dalmatia ns. As the threat of a renewed Norman invasion by Bohemond loomed, the Emperor replaced John with his younger brother Alexios. The name and identity of John's wife is unclear. He may be the nephew of Alexios I Komnenos named John who is recorded to have married an unnamed daughter of Michael VII Doukas (other candidates include John Taronites and Alexios' brother Adrianos Komnenos, who took the monastic name John).
John
Alexios I Komnenos