You're not going to believe this - but the boxing legend Muhammed Ali could have been an Irishman.
In 1860 John O'Grady, a young man from Ennis in the Irish Republic, crossed the Atlantic to escape the Great Famine.
He was Ali's great grandfather.
Now, almost one hundred and fifty years later, the boxer has just been back to the land of his ancestors and has met some of his living relatives.
It was one of the biggest excitements to hit the town of Ennis for many years.