April 26, 2006: Prince Phillip, The Duke of Edinburgh, at the National Concert Hall in Dublin after they jointly presenting with President Mary McAleese 91 Gaisce Gold Awards to 91 young adults.RollingNews.ie

Buckingham Palace confirmed on April 9 that 99-year-old Prince Philip, the Duke of Edinburgh, passed away at Windsor Castle earlier that morning.

Prince Philip was married to Queen Elizabeth II for more than 70 years and he was the longest-serving consort in British history. In 2011, he accompanied the Queen on her historic visit to Ireland, the first by a British monarch since Ireland won its independence from Britain.

May 18, 2011: Queen Elizabeth II and Prince Philip, Duke of Edinburgh visit the Guinness Storehouse in Dublin, Ireland. (Getty Images)

In the wake of Prince Philip's passing, condolences were offered from some of Ireland's and Northern Ireland's leading politicians.

Michael D. Higgins, the President of Ireland, said in part: "I recall with a special appreciation how welcome he made Sabina and I feel in 2014, when I was making the first State Visit by an Irish Head of State to the United Kingdom in 2014.

"My hope is that these visits in 2011 and 2014, which he shared, will continue to be symbols of what we share as neighbours in friendship, peace and a sustainable future. "

Micheál Martin, the Taoiseach of Ireland, said his thoughts and prayers are now with Queen Elizabeth and the people of the UK. He said in a separate statement that "Ireland remembers the great success of the State Visit to Ireland in 2011 by Queen Elizabeth and Prince Philip, a historic and important occasion which was a key moment in our bilateral relations."

Mary Lou McDonald, the President of Sinn Féin, currently the opposition party in Irish government, offered her sympathies "to those of a British identity on our island:"

Simon Coveney, Ireland's Minister for Foreign Affairs, said "today is a very sad day for the United Kingdom:"

Adrian O’Neill, Ireland's Ambassador to the UK, paid "tribute to the valuable contribution that Prince Philip made" between Ireland and Britain:

Arlene Foster, the First Minister of Northern Ireland and the President of the Democratic Unionist Party (DUP), shared a video in which she said that the Duke "had a strong interest in Northern Ireland" and made special mention of the "inspirational" Duke of Edinburgh Awards:

Michelle O'Neill, the Deputy First Minister of Northern Ireland and the Vice President of Sinn Féin, extended her condolences:

Foster and O'Neill additionally issued this joint statement.

Brandon Lewis, the Secretary of State for Northern Ireland, said that Prince Philip "inspired so many across Northern Ireland:"

Alex Maskey MLA, the Speaker of the Northern Ireland Assembly, said in part that he was "very sorry" to learn of the passing of Prince Philip and that he will be working with the Assembly Commission and Party Whips to put arrangements in place for the formal expression of condolences: