Mcwilliams Family History

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Mcwilliams Name Meaning

Irish: Anglicized form of Gaelic Mac Uilleim, a patronymic from a Gaelicized form of William, with the redundant addition of English patronymic -s. In many cases it represents a partial Gaelicization of Welsh Williams.

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

Similar surnames: Mcwilliam, Mcphillips, Guilliams, Mckellips, Williams, Mcquillan

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Mcwilliams Ethnicity Estimate

What are the common regions with the Mcwilliams name?

These results combine data from everyone in the AncestryDNA® database with the last name Mcwilliams. The Ancestry® ethnicity regions shown are top five most common on average for these people.

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  • England & Wales


  • Ireland & Scotland


  • Germanic Europe


  • Norway


  • Eastern Europe & Russia


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Mcwilliams Family Origin

Where is the Mcwilliams family from?

Mcwilliams Family Occupations

What did your Mcwilliams ancestors do for a living?

In 1880, Farmer, Laborer and Keeping House were the top 3 reported jobs worked by Mcwilliams. A less common occupation for the Mcwilliams family was Farming. The most common Mcwilliams occupation in the USA was Farmer. 36% of Mcwilliams's were Farmers.

View Census data for Mcwilliams | Data not to scale

  • Farmer

  • Laborer

  • Keeping House

  • Farming


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

Mcwilliams Historical Records

What Mcwilliams family records will you find?

Census Record

There are 88,000 census records available for the last name Mcwilliams. Like a window into their day-to-day life, Mcwilliams 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 Mcwilliams

Passenger List

There are 11,000 immigration records available for the last name Mcwilliams. 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 Mcwilliams immigration records

Draft Card

There are 20,000 military records available for the last name Mcwilliams. For the veterans among your Mcwilliams ancestors, military collections provide insights into where and when they served, and even physical descriptions.

View all Mcwilliams military records

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

Mcwilliams Life Expectancy

What is the average Mcwilliams lifespan?

Between 1943 and 2004, in the United States, Mcwilliams life expectancy was at its lowest point in 1944, and highest in 1999. The average life expectancy for Mcwilliams in 1943 was 32, and 75 in 2004.

View Social Security Death Index (SSDI) for Mcwilliams

An unusually short lifespan might indicate that your Mcwilliams 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 Mcwilliams Family Ancestors

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