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Dennis O'Brien (abt. 1834 - 1886)

Dennis O'Brien
Born about in Birchfield (Ennis), County Clare, Irelandmap
Ancestors ancestors
Husband of — married 19 Nov 1854 in Boston, Suffolk, MA, USAmap
Descendants descendants
Died in Cambridge, Middlesex, MA, USAmap
Profile last modified | Created 21 Feb 2012
This page has been accessed 622 times.


Father Sir Cornelius O'Brien MP 1782-1857

Mother Margaret Long 1793- 1839

He was a Teamster and he lived on 3 Utica Street in Boston, MA.

Dennis became a U.S. citizen in 1861. [1]


  • Margaret Cain


  • Mary
  • Cornelius
  • Michael
  • Ellen
  • John


  1. Find A Grave Memorial# 98021476
  • Massachusetts, Town and Vital Records, 1620-1988: Marriage

Name: Dennis O'Brien Event Type: Marriage Birth Date: abt 1834 Marriage Date: 19 Nov 1854 Marriage Place: Boston, Massachusetts Marriage Age: 20 Father Name: Cornelius Spouse Name: Margaret Cain Spouse Marriage Age: 19 Spouse Father Name: Michael Source Information Original data: Town and City Clerks of Massachusetts. Massachusetts Vital and Town Records. Provo, UT: Holbrook Research Institute (Jay and Delene Holbrook).

  • Massachusetts Vital Records, 1840–1911: Death

Name: Dennis O'Brien Gender: Male Birth Date: abt 1834 Birth Place: Ireland Death Date: 10 Mar 1886 Death Place: Cambridge, Massachusetts, USA Age at Death: 52 Wills and Probates: Search for Dennis O'Brien in Massachusetts Wills & Probates collection Source Information Original data: Massachusetts Vital Records, 1840–1911. New England Historic Genealogical Society, Boston, Massachusetts.

  • U.S., Find A Grave Index, 1600s-Current

Find A Grave Memorial# 98021476 Name: Dennis O'Brien Birth Date: 1833 Death Date: 10 Mar 1886 Cemetery: Catholic Mount Auburn Cemetery Burial or Cremation Place: Watertown, Middlesex County, Massachusetts, USA Has Bio?: N URL:

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Ia anyone able to provide details of the DNA confirmation as I am interested in this profile. I see the person who added them now has a closed account.

DNA confirmations added to Wikitree are supposed to be sourced. Please see:

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