Watch Who Do You Think You Are Ireland online: Episode 4 Ardal O'Hanlon

The O'Hanlon name has been at the heart of many an Irish rebellion, and Ardal is desperate to separate the myth from the reality. He re-traces his Grandfather's exploits, from the morning of Bloody Sunday through to a dramatic prison-break; he also sets out to prove his connection to famous castle & an infamous 17th Century rebel. But ultimately, it's a childhood myth which turns out to be true that takes Ardal to New York, where he uncovers the story of an extraordinary Irish dynasty at the heart of a modern American revolution.

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