Looking for any information with regard to Marian Doyle born Maria Theresa Gleeson.

Marian Doyle was born Maria Theresa Gleeson in 1952 in Thurles, Co.Tipperary and was my wife's younger sister. It is our understanding (via the local PP) that she was adopted (? legally) by Margaret Doyle nee O'Rourke and her brother Thomas O'Rourke. They all lived at 8 Chapel Street, Borrisoleigh, Co.Tipperary and all three are buried in Ileigh Church Yard, Borrisoleigh.

Marian died in Cork General Hospital in 2001 but I have been unable to find any records anywhere for her or her adopted family. So any information with regards to finding records or indeed Marian's life and cause of death would be most helpful.

Alan