The only information I have relating to Catherine and John is sourced from their daughter Florence’s marriage certificate. According to that document Florence is from Ballinacurra, County Limerick, Ireland, so presumably that is where her parents were living. Her father John is described as a Farmer.
According to the BDM index, Florence’s mother was Catherine Connolly. I believe the information provided by her at her marriage would be more accurate than that provided after her death but there is always a element of doubt.
I have not found records for Florence’s arrival in Australia so cannot be certain that John & Catherine remained in Ireland.