Looking for Casey's

I'm looking for any Casey's who lived in Co. Cork. My gg-grandfather David was born there in 1832. I'm not sure of the town at all. David's father was Thomas Casey. Not sure what David's mother's name is. David Came to the United States between the years of 1840 to 1859.

I'm wondering if there are any Casey's left.

Can email me at Mysticaloceanlover@hotmail.com

Thanks,
Milissa Casey