Colahan Family History

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Colahan Name Meaning

Irish: possibly an Anglicized form of Gaelic Ó Cathaláin ‘descendant of Cathalan’, a diminutive of Cathal (see Cahill). It may also be from Mac Uallocháin ‘son of Uallachán’, a personal name from a diminutive of uallach ‘proud’.

Source: Dictionary of American Family Names ©2013, Oxford University Press

Similar surnames: Callahan, Conahan, Monahan, Coleman, Morahan, Hallahan, Cavan, Cohan

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Colahan Family Origin

Where is the Colahan family from?

Colahan Family Occupations

What did your Colahan ancestors do for a living?

In 1880, the most common Colahan occupation in the USA was Farmer. 12% of Colahan's were Farmers. Farmer, Keeping House and Laborer were the top 3 reported jobs worked by Colahan. A less common occupation for the Colahan family was At Home.

View Census data for Colahan | Data not to scale

  • Farmer

  • Keeping House

  • Laborer

  • At Home


Census records can tell you a lot of little known facts about your Colahan ancestors, such as occupation. Occupation can tell you about your ancestor's social and economic status.

Colahan Historical Records

What Colahan family records will you find?

Census Record

There are 4,000 census records available for the last name Colahan. Like a window into their day-to-day life, Colahan census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.

Search 1940's US census records for Colahan

Passenger List

There are 608 immigration records available for the last name Colahan. Passenger lists are your ticket to knowing when your ancestors arrived in the USA, and how they made the journey - from the ship name to ports of arrival and departure.

View all Colahan immigration records

Draft Card

There are 685 military records available for the last name Colahan. For the veterans among your Colahan ancestors, military collections provide insights into where and when they served, and even physical descriptions.

View all Colahan military records

You've only scratched the surface of Colahan family history.

Colahan Life Expectancy

What is the average Colahan lifespan?

Between 1950 and 2004, in the United States, Colahan life expectancy was at its lowest point in 1961, and highest in 2001. The average life expectancy for Colahan in 1950 was 42, and 68 in 2004.

View Social Security Death Index (SSDI) for Colahan

An unusually short lifespan might indicate that your Colahan ancestors lived in harsh conditions. A short lifespan might also indicate health problems that were once prevalent in your family. The SSDI is a searchable database of more than 70 million names. You can find birthdates, death dates, addresses and more.

Famous Colahan Family Ancestors

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