Census Records
There are 1 million census records available for the last name O'brien. Like a window into their day-to-day life, O'brien census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.
Search Canadian census records for O'brienPassenger Lists
There are 199,000 immigration records available for the last name O'brien. Passenger lists are your ticket to knowing when your ancestors arrived in Canada, and how they made the journey - from the ship name to ports of arrival and departure.
View all O'brien immigration recordsDraft Cards
There are 183,000 military records available for the last name O'brien. For the veterans among your O'brien ancestors, military collections provide insights into where and when they served, and even physical descriptions.
View all O'brien military recordsCensus Records
There are 1 million census records available for the last name O'brien. Like a window into their day-to-day life, O'brien census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.
Search Canadian census records for O'brienPassenger Lists
There are 199,000 immigration records available for the last name O'brien. Passenger lists are your ticket to knowing when your ancestors arrived in Canada, and how they made the journey - from the ship name to ports of arrival and departure.
View all O'brien immigration recordsDraft Cards
There are 183,000 military records available for the last name O'brien. For the veterans among your O'brien ancestors, military collections provide insights into where and when they served, and even physical descriptions.
View all O'brien military recordsBetween 1991 and 2004, in the United States, O'brien life expectancy was at its lowest point in 1993, and highest in 1991. The average life expectancy for O'brien in 1991 was 71, and 61 in 2004.
