"The Queen has been pleased to accept an invitation from the president of Ireland to pay a state visit to Ireland this year. The Queen will be accompanied by The Duke of Edinburgh," a statement from Buckingham Palace said on Friday.
The last visit to Ireland by a reigning British monarch was by King George V in 1911, a decade before Ireland won independence from Britain.
In a statement from Dublin, the Irish government welcomed confirmation of the visit, saying it "will mark a further improvement in the very good relations between Ireland and the United Kingdom".
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Further details, including dates and venues, will be issued later.
