The newspapers can be a a very useful tool in adding records to your family. Irish newspapers of the 19th century have lists of Irish in the US who contributed to various causes in Ireland and at times these same lists give the County of origin too. One list in particular that comes to mind is for the city of Philadelphia.
One newspaper is the Freeman's Journal that is archived from the early 1800's to 1900. I often carry out research for more local newspapers which would cover a particular County.
I am a great believer in adding to your ancestors details that give an insight into their lives. For example if you know yours left Ireland in the latter half of the 1840's read as much as you can of the Famine and indeed the journey's these people had to endure to reach their destination...... it certainly was no cruise.
I am always willing to help out in anything regarding Ireland.
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