Former President Barack Obama Barack Hussein ObamaMichelle Obama and Jennifer Lopez exchange Ginsburg memories Pence defends Trump's 'obligation' to nominate new Supreme Court justice The militia menace MORE on Sunday shared a photo of his 2011 visit to Ireland in honor of St. Patrick’s Day.

The former president joked that on St. Patrick’s Day, “it’ll always be O’Bama.”

The photo shows Obama smiling and embracing a woman in the Irish town of Moneygall, the birthplace of his great-great-great-grandfather.

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“This was back in 2011, when I was visiting the tiny town of Moneygall, the place where my great-great-great grandfather, a shoemaker named Falmouth Kearney, lived his early life,” Obama wrote on Instagram.

“I marveled as I walked around on the same old floorboards that he did, then I had the privilege to address the people of Ireland on College Green,” he added. “For me, this photo pretty much sums up their joyful spirit; a warmth and generosity that stay with me to this day.”

“Happy St. Patrick's Day—on this day, it’ll always be O’Bama.”