L. Dargan from Clonmel before 1870 perhaps related to Michael O'Mahoney a tailor

Hi 

I have forwarded your request to a volunteer for Co Tipperary who may be able to assist you.

All the best

Genealogy Support

Hi,

You could try searching Ellis Island Free port of New York passenger records http://www.ellisisland.org/  The record may say where  the person or family came from in Ireland. I see you have checked the U.S.Census.

The Brooklyn Daily Eagle Newspaper 1841-1902 online  http://eagle.brooklynpubliclibrary.org/Default/Skins/BEagle/Client.asp?Skin=BEagle&AW=1345386286968&AppName=2&GZ=T

 The land records called the Tithe Applotment Books (1823-38) or the later Griffith's Valuation (1848-64). Griffith's is freely available here:

www.askaboutireland.com or here: www.failteromhat.com Failte Romhat has lots of other useful links you could try looking at. Tithe Applotment Books (1823-38). Microfilm copies of the books for all of Ireland are available at the National Archives of Ireland (NAI) http://www.nationalarchives.ie/genealogy1/genealogy-records/tithe-applotment-books-and-the-primary-griffith-valuation/  also      Familysearch.org.

You could try searching  http://www.rootsireland.ie/  Tipperary South. (Fee involved)   Find a Grave is a site that has millions of Grave, Cemetery records and photos..   http://www.findagrave.com/   

Posting a little more information on L.Dargan might help you connect with someone researching the family. Example  :     Full name, was L.Dargan Male or Female. Did he or she emigrate or live in Clonmel South Tipperary.

Good luck with your research.