an Entity references as follows:
Irene Doukaina or Ducaena (Greek: Εἰρήνη Δούκαινα, Eirēnē Doukaina; c. 1066 – 19 February 1138) was a Byzantine Greek empress by marriage to the Byzantine emperor Alexios I Komnenos. She was the mother of Emperor John II Komnenos and the historian Anna Komnene.