Jenny -- Elizabeth O'Keefe would be my great great great great grandmother. According to research I have received from a relative in Illinois, she was born in Johnstown, County Meath (same as Westmeath) Ireland. We are descendants of Elizabeth's grandson Matthew Corrigan (youngest of 5 children), who left Ireland in 1861 to follow his first love Mary Kelly to the United States. They had settled in Sagamon Illinois with their three children, and she died at age 30, six years later.
Information I found on the website http://frommesetc.com/index_Page2410.html
... maintained by Barbara Fromme Charlaon shows:
Daniel Corrigan was born in 1747 and lived near the village of Fore in County Westmeath, Ireland.
Elizabeth O’Keefe was born in 1763. She was from Johnstown, County Meath, Ireland. Daniel married Elizabeth and they had a son named John in 1786.
Daniel died in 1796 and Elizabeth died in 1823.
If you have any additional information, as I imagine you might since your original post was twelve years ago... I would appreciate it.