Actor Robert Downey Jr., star of Iron Man, had a hunch that his ancestors came across the Atlantic at least 200 years ago, but he didn't know just how early they set sail until his appearance on PBS's Finding Your Roots , hosted by The Root's editor-in-chief Henry Louis Gates Jr.
"I'd have thought like mid-nineteenth century or maybe early 19th-century, but this is significantly earlier," he said. "It's really cool."
Gates set out to trace Downey's genealogy, surprising the actor with his findings. Watch the clip to see what he uncovered. The episode premieres Sunday, April 22, at 8 p.m. ET/7 p.m. CT.
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