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Dennahan Family History

Dennahan Surname Meaning

Historically, surnames evolved as a way to sort people into groups - by occupation, place of origin, clan affiliation, patronage, parentage, adoption, and even physical characteristics (like red hair). Many of the modern surnames in the dictionary can be traced back to Britain and Ireland.


Similar surnames: Lenahan, Dunnagan, Dennen, Monahan, Hanrahan, Venneman, De Haan

Search for a relative to learn more about your family history.

Hint: Try searching for a relative alive in 1940.

Where is the Dennahan family from?

You can see how Dennahan families moved over time by selecting different census years. The Dennahan family name was found in the USA in 1920. In 1920 there was 1 Dennahan family living in Illinois. This was about 50% of all the recorded Dennahan's in USA. Illinois and 1 other state had the highest population of Dennahan families in 1920.
Use census records and voter lists to see where families with the Dennahan surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.
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What Dennahan family records will you find?

Census Records

There are 28 census records available for the last name Dennahan. Like a window into their day-to-day life, Dennahan census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.

Search UK census records for Dennahan

Passenger Lists

There are 2 immigration records available for the last name Dennahan. Passenger lists are your ticket to knowing when your ancestors arrived in the UK, and how they made the journey - from the ship name to ports of arrival and departure.

View all Dennahan immigration records

Draft Cards

There are 2 military records available for the last name Dennahan. For the veterans among your Dennahan ancestors, military collections provide insights into where and when they served, and even physical descriptions.

View all Dennahan military records

You've only scratched the surface of Dennahan family history

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What is the average Dennahan lifespan?

An unusually short lifespan might indicate that your Dennahan 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.

Social Security Death Index (SSDI) for Dennahan

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