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Find more Riardan relatives and grow your tree by exploring billions of historical records. Taken every decade since 1790, the U.S. Federal Census can tell you a lot about your family. For example, from 1930 to 1940 there were 7 more people named Riardan in the United States — and some of them are likely related to you.

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What if you had a window into the history of your family? With historical records, you do. From home life to career, records help bring your relatives' experiences into focus. There were 20 people named Riardan in the 1930 U.S. Census. In 1940, there were 35% more people named Riardan in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 27 people named Riardan were living in the United States. In a snapshot:

  • 4 were children
  • Although 48% were female, the most common name for males was James
  • 7 adults were unmarried
  • They typically took 10 weeks of vacation a year

Learn where they came from and where they went.

As Riardan families continued to grow, they left more tracks on the map:

  • They most commonly lived in Illinois
  • 40% were first-generation Americans
  • 2 migrated within the United States from 1935 to 1940
  • 45% were born in foreign countries