When did Michael F, O'Brien's father, Dennis O'Brien come to the United States?

Question

Dennis O'Brien (1834-1886) from Ennis, County Clare, Ireland.

Son: Michael Francis O'Brien (1857-1934) of Boston, MA.

Answer 1

I use these sites, which you may have but if not they may help

 

https://www.irishgenealogy.ie/en/

http://www.nli.ie/en/parish-register.aspx

http://www.lurganancestry.com/bmds.htm

http://www.from-ireland.net/irish-names/latin-names-in-english/

Best of luck

Gordon