I am looking for the parents of my great grandfather and his brothers. They immigrated to New Zealand for the gold rush in the 1860's. They may have been in Ballarat, Victoria Australia gold mining as well prior to immigrating to Central Otago in New Zealand. I think Denis Casey was born in 1833, James in 1834 and John in 1835. They all died in New Zealand and the only one to marry and have children was my great grandfather John Casey. On their death notices, two say born in Tralee Ireland and one says Castle Ireland which I take as Castleisland. Deaths certificates note that their father was Michael Casey and mother Nora or Honora Casey (nee Ready or Reidy or Reddy). Can anyone help me trace my great,great grandparents Irish information please.