Question: What is the date of death of Irene Doukaina's husband?
Sentence (from "Irene Doukaina"): Irene Doukaina or Ducaena(" Eirēnē Doukaina"; – 19 February 1138) was a Byzantine Empress by marriage to the Byzantine emperor Alexios I Komnenos, and the mother of the emperor John II Komnenos and of the historian Anna Komnene.
Relevant evidence: Yes