Martin McCarty

Hello, My name is Tom McCarthy and I'm trying to find the birth place of my great great grandfather, Martin McCarty. We have no record of where he was born or where he lived. As a young boy I can recall my grandmother talking about Meath. That has been many years ago. I am now 64 years old and my grandmother has been gone now for almost 50 years. What we do know is that as an adult Martin had 2 son's. Morgan was the oldest son and was born about 1837 + or - 2 years. Jeremiah was the younger son and for a fact was born in 1842. In 1849 Martin along with his son's came to the USA. Martin was married, however not long before he came to the US his wife had died. We don't know the name of Martin's wife or where she was from. Recently I have discovered that on Oct. 2, 1849 that a Jeremiah McCarty age 7 arrived in Boston aboard a ship named Epaminondas. The previous day on Oct. 1, 1849 a Martin McCarty arrived in Boston aboard a ship named the William Jarvis. There were other McCarty passengers on both of there ships, but not any first names that I recognize. Both ships left from Liverpool England. If this is the Martin and Jeremiah that I'm looking for then why would they be on different ships? I hope to visit Ireland someday in the near future. My goal is to know the name of Martin's wife and where she was from, and to know where Martin was from. My farther always wanted to visit the location of Martin's home but he never did. My father hoped that someday that I would be able to visit Martin's home and any relitives that we have in Ireland. I've rambled way too long. I would be so grateful to anyone who may have a clue to where Martin's birthplace and home was located. Thank you to all who may read this. Thomas McCarthy. I should mention that my grandfather and his brothers changed our name from McCarty to McCarthy.