Who Do You Think You Are?

Celebrities explore their family trees in this series. In each episode, a star takes a globe-spanning journey of self-discovery to uncover the mysteries of his or her ancestral history. Their familial stories in turn shed light on events in American and world history.

Season 4, Episode 5 Chris O'Donnell

First Aired: August 20, 2013

Actor Chris O'Donnell explores his father's side of the family and its patriotic legacy.

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