Merrion Hotel is a hotel located on Upper Merrion Street, Dublin, Ireland. The hotel comprises a block of four houses in a terrace on Upper Merrion Street, Dublin 2, of which "Mornington House", is the leftmost (when viewed from the front). The houses were built in the 1760s by Charles Monck, 1st Viscount Monck for wealthy Irish merchants and nobility. He lived in No. 22, which became known as "Monck House". The first of these Georgian houses (No. 24), Mornington House is remembered historically as being the reputed birthplace of Arthur Wellesley, 1st Duke of Wellington. It is half owned by Lochlann Quinn.