Dennis Joseph O'Neil

M, (17 November 1882 - 19 May 1955)
Father-Biological*Andrew O'Neil b. 13 Jun 1860, d. 28 Nov 1941
Mother-Biological*Mary Ann Reardon b. 5 Nov 1860, d. 12 Apr 1923
Last Edited=15 May 2023
Dennis Joseph O'Neil
     Dennis Joseph O'Neil was born on 17 November 1882 at Merthyr Tydfil, Breconshire, Glamorganshire, Wales.1 He was the son of Andrew O'Neil and Mary Ann Reardon. Dennis Joseph O'Neil was christened on 3 December 1882 at St. Mary's Roman Catholic Church, Merthyr Tydfil, Breconshire, Glamorganshire, Wales. He immigrated on 20 January 1886 to the United States He arrived at Ellis Island with his mother on board the SS Helvetia from Liverpool. They then went to Pittsburgh, Pennsylvania to joining his father who was already there.1 Heappeared on the US Census of 1900 in the household of Andrew O'Neil and Mary Ann Reardon at 81 West Carson Street, Pittsburgh, Pennsylvania.1 According to the Federal Census in 1900, Dennis was a lay off boy.1

Dennis Joseph O'Neil married Eva M. Smith, daughter of Renel Smith and Anna Marie Stein, in 1906.

1. Andrew D. O'Neil (1906-1984)
2. Adam O'Neil (1908-1908)
3. John Joseph O'Neil (1909-1979)
4. Dennis James O'Neil (1911-1984)
5. Eva O'Neil (1914-1986)
6. Dorothy O'Neil (1916-1987)
7. Harry Joseph O'Neil (1919-1997.)

Dennis Joseph O'Neil died on 19 May 1955 at St. John's General Hospital, Pittsburgh, Pennsylvania, at age 72 from a cerebral hemerhage. He was buried on 23 May 1955 at Calvary Catholic Cemetery, Pittsburgh, Pennsylvania.


  1. Census Bureau. 1900 U.S. Federal Census. Provo, Utah: Operations, 2004.