Merrion Street (Irish: Sráid Mhuirfean) is a major Georgian street on the southside of Dublin, Ireland which runs along one side of Merrion Square. The garden entrance of Leinster House is located on the street, as is Irish Government Buildings, formerly the Royal College of Science for Ireland. Some reports suggest that Arthur Wellesley, 1st Duke of Wellington was born in his family's Mornington House on the street.