Sir John Gray JP, sometimes spelt John Grey, was an Irish physician, surgeon, newspaper proprietor, journalist and politician. Gray was active both in municipal and national government for much of his life, and had nationalist ideals – which he expressed as owner of the Freeman's Journal, chairman of the Dublin Corporation Water Works Committee between 1863 and 1875, and Member of Parliament in the House of Commons of the United Kingdom of Great Britain and Ireland for Kilkenny city from 1865 until his death. He was a supporter of Daniel O'Connell, and later of Charles Stewart Parnell, and advocated a repeal of the Act of Union. Through his offices with Dublin Corporation, the Vartry Reservoir water supply works were completed, introducing a freshwater supply to Dublin city and suburbs. He died at Bath in England on 9 April 1875. Shortly after his death, his contributions to the provision of the water supply, and the beneficial impact this had to conditions of public health in Dublin, were recognised in a memorial statue on O'Connell Street.

Claremorris is a town in County Mayo in the west of Ireland, at the junction of the N17 and the N60 national routes. As of the 2017, it was the fastest growing town in the county, having seen a 31% increase in population between 2006 and 2011 and a 23% increase between 2002 and 2006. Between the 2016 census and the 2022 census, the population of Claremorris grew further, from 3,687 to 3,857 inhabitants.