Looking for Any Descendants of Patrick Byrnes and His Wife Catherine Surname from Wicklow Who Came to South Australia Then Western Australia

Looking for anyone with more precise info on the precise place of origin in Ireland of Patrick and Catherine Byrnes( or Byrne- it seems the s was dropped).
They came to S Australia in 1852 with 4 children: William, James, John, Elizabeth.
I am a descendant of William who married Bridget Lacey in Adelaide in 1856.

Through Irish church records (Parish of Rahdrum) I think I have found marriage certificate for Patrick BYRNE and Catherine MCKEON Jan 1832.
Baptisms for Elizabeth and James which suggest Ballymoris as a location- but nothing for the others.