O'Brien Family History & Genealogy

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O'Brien Surname History

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  • O'Brien last name meaning & etymology
  • O'Brien spelling & pronunciation
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O'Brien Family Tree

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Famous People named O'Brien

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O'Brien Country of Origin, Nationality, & Ethnicity

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O'Brien Meaning & Etymology

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O'Brien Life Expectancy

According to our database of 3,143 people with the last name O'Brien that have a birth and death date listed:

Life Expectancy

57.4
years

Most Common O'Brien First Names

According to our database of 7,993 people with the last name O'Brien that have a first name listed, these are the most common first names:

  • John 14.8%
  • James 7.6%
  • William 6.1%
  • Michael 5.6%
  • Patrick 5.5%
  • Thomas 5.4%
  • Edward 2.5%
  • Daniel 1.9%
  • Joseph 1.7%
  • Robert 1.7%
  • Dennis 1.6%
  • Charles 1.3%
  • Richard 1.3%
  • George 1.1%
  • Mary 1.0%
  • Francis 0.9%
  • Timothy 0.8%
  • Frank 0.7%
  • Henry 0.7%
  • Jeremiah 0.7%
  • Margaret 0.7%
  • Lawrence 0.6%
  • David 0.6%
  • Cornelius 0.6%
  • Martin 0.5%
  • Peter 0.5%
  • Helen 0.5%
  • Raymond 0.5%
  • Eugene 0.4%
  • Hugh 0.4%
  • Terrence 0.3%
  • Donald 0.3%
  • Matthew 0.3%
  • Paul 0.3%
  • Bernard 0.3%
  • Catherine 0.3%
  • Dorothy 0.3%
  • Walter 0.3%
  • Gerald 0.3%
  • Kenneth 0.3%
  • Harold 0.3%
  • Anna 0.2%
  • Elizabeth 0.2%
  • Philip 0.2%
  • Stephen 0.2%
  • Frances 0.2%
  • Patricia 0.2%
  • Vincent 0.2%
  • Andrew 0.2%
  • Ruth 0.2%

O'Brien Pronunciation & Spelling Variations

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Last names similar to O'Brien

Ob'Rien, Obriena, Obrienb, Obrienbobby, Obrienbrown, Obriencharles, Obrienchristopher, Obrienclayton, Obriencullen, Obriendavid, Obriendavis, Obriendean, Obriene, O'Briene, Obrienedward, Obrienelkin, Obrienf, Obrienffrancis, Obriengareth, Obriengary

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