Need to find out where in Ireland O'Byrne s were from

Question

I know my family originally came from somewhere in Ireland but I don't know for sure where. My great grandfather's name was Lee Leo O'Byrne which was changed to Byrne when he arrived at Ellis Island. That that is about all I know and I'm not 100% sure of this information. Is it possible that someone can maybe help me?

Comments

When did he arrive? If the ship name can be pinned down, maybe the port of departure can be determined.

Answer 1

Possibilities:

Martin Lee Byrne
New York, New York City Municipal Deaths, 1795-1949
birth:    1828    Ireland
death:    4 October 1888    Manhattan, New York, New York, United States
burial:    6 October 1888    New York, New York, New York
residence:        New York, New York, New York            

Mathew Leo O'Byrne
Ireland Civil Registration Indexes, 1845-1958
birth:    April 1889 / June 1889    Dundalk, Ireland            

Stephen Leo O'Byrne
Ireland Civil Registration Indexes, 1845-1958
birth:    April 1896 / June 1896    Cork, Ireland            

Leo O'Byrne
Ireland Civil Registration Indexes, 1845-1958
birth:    January 1944 / March 1944    Dublin South, Ireland    
mother:    Eidd        

Patrick Joseph Leo Fiacre O Byrne
Ireland Births and Baptisms, 1620-1881
birth:    30 August 1870    Tipperary, Ireland    
father:    John Count O Byrne
mother:    Elleanora De Habna

Answer 2

You will find the Byrne Sept mostly around County Wicklow. My own come from Rathdrum And Dublin there is a book called Leabhar Branach The Book of the O'Byrnes edited by Sean Mac Airt  ISBN 1 85500 008 3 if you go to an Irish name site they will give you more information Than I have space for here. hope this helps.