Arrived aboard the Adriatic into New York on 25 May 1883, out of Liverpool and Queenstown, Ireland:
Healy, Ellen, aged 46, from Ireland Healy, Denis, aged 17, laborer Healy, Patrick, aged 15, laborer
In the Irish Civil Registration Birth Index, there are only 24 Den(n) Healys born in the period 1864-1868. From that same online tree, Ellen is said to have died 6 November 1907, aged 80, which would correspond with the age of the Ellen in the above passenger record. The same tree gives a birth place for the youngest child, also named Ellen (or Nellie) in 1864 in Clonmoyle, Co. Cork.
I did find this baptism for a child of Jeremiah & Ellen:
Name: Jeremiah Healy Gender: Male Baptism/Christening Date: Baptism/Christening Place: CLONMOYLE, CORK, IRE Birth Date: 12 Jan 1872 Birthplace: Clonmoyle, Cork, Ire Death Date: Name Note: Race: Father's Name: Jeremiah Healy Father's Birthplace: Father's Age: Mother's Name: Ellen Jennings
I also found the one for Denis:
Name: Denis Healy Gender: Male Baptism/Christening Date: Baptism/Christening Place: Birth Date: 04 May 1866 Birthplace: 0515,CLONMOYLE DISTRICT,CORK,IRELAND Death Date: Name Note: Race: Father's Name: Jeremiah Healy Or Hely Father's Birthplace: Father's Age: Mother's Name: Ellen Jennings
Also one for Patrick, born 30 March 1868 in Clonmoyle, and a James, born 1 January 1870, and Ellen, born 31 May 1864.