Searching for Family

Lawrence Downey 1826 Ireland and Mary Madden 1830 Ireland arrived in America abt 1845-46 in Boston Massachusetts.  Lived in Middlesex County, Massachusetts

I am in search of my Great-great grandfather James Magee b. 1786  and great grandfather James Magee 2nd b.1821

James 1st married Nancy/Ann BARRETT  in Ireland they had 8 children.JAMES-1821, (he was my Great-Grandfather)  MATTHEW, MARK, JOHN, ISABELLA, MARY, ANN, and ELLEN . I know all 8 children along with their mother sailed on the SCOTLAND out of Liverpool in 1838 and landed in New York.  I know a lot about them once they came to America, but I have no idea where they came from in Ireland.  I love Ireland its people and everything connected to it...I appreciate any ANY   ANY  help you can afford me.  All the best!