High Quality Content by WIKIPEDIA articles! Saint Irene of Hungary, born Piroska, (1088 – 13 August 1134) was a daughter of Ladislaus I of Hungary and Adelaide of Swabia. Her maternal grandparents were Rudolf of Rheinfeld and his second wife Adelheid of Savoy. Adelheid was a daughter of Otto of Savoy and Adelaide of Turin. She was the mother of the future emperor Manuel I Komnenos.