Published Friday, 03 February 2012
Martin Sheen traced his family's history in Ireland. (© NBC Universal)
The actor discovered the story of Michael Fieland as he researched his family tree on the US version of the TV show Who Do You Think You Are?
"I'm enormously proud of him," the 71-year-old said, after visiting the Dublin cell where it is believed his mother's brother was incarcerated.
"I would like to hope that if I had been here in Ireland at the time, I would have followed him. And I would have been as committed as he was."
Sheen, famed for his roles in Apocalypse Now and the TV series West Wing, learnt much about his ancestors in Ireland and their links to the War of Independence.
He is one of 10 children born to a Spanish father and Irish mother - Mary-Anne Fieland, from Borrisokane, who emigrated to America during the war.
Sheen, whose real name is Ramon Estevez, said he believes she was sent away to protect her from the intense hostilities.
"And she was meant to come back when the fighting stopped and the Republic was established in 1923," he continued.
"So it was a very, very satisfying moment for me to know that she, too, was involved."
The father of screen actors Charlie Sheen and Emilio Estevez further described how his relatives' actions mirrored his own political activism.
He said: "You don't expect to change the world, you don't expect to even influence your family or your friends.
"You do it because you cannot not do it and be who you are or who you are meant to be."
Sheen fulfilled a life dream in 2006 when he returned to his mother's homeland, enrolling as a mature student at the National University of Ireland in Galway.