As leader of the North Sydney Mercy Sisters, Sister Josephine Byrnes was responsible for the establishment of Justinian House in 1986. The Crows Nest hostel for older people was named after Mother M Justinian Scollen who was the matron of the Mater Hospital from 1919 to 1962.
Chris Rigby, Managing Director of Catholic Healthcare, said incorporating some of this history into St Peter's was a way of providing a connection with the service and care of the Sisters of Mercy, and acknowledging their significant role in this area.